19721520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:89

約数の個数: 360

約数和(自身を含む): 84900816

約数和(自身を除く): 65179296

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 43, 45, 48, 49, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 86, 90, 91, 98, 104, 105, 112, 117, 120, 126, 129, 130, 140, 144, 147, 156, 168, 172, 180, 182, 195, 196, 208, 210, 215, 234, 240, 245, 252, 258, 260, 273, 280, 294, 301, 312, 315, 336, 344, 360, 364, 387, 390, 392, 420, 430, 441, 455, 468, 490, 504, 516, 520, 546, 559, 560, 585, 588, 602, 624, 630, 637, 645, 688, 720, 728, 735, 774, 780, 784, 819, 840, 860, 882, 903, 910, 936, 980, 1008, 1032, 1040, 1092, 1118, 1170, 1176, 1204, 1260, 1274, 1290, 1365, 1456, 1470, 1505, 1548, 1560, 1638, 1677, 1680, 1720, 1764, 1806, 1820, 1872, 1911, 1935, 1960, 2064, 2107, 2184, 2205, 2236, 2340, 2352, 2408, 2520, 2548, 2580, 2709, 2730, 2795, 2940, 3010, 3096, 3120, 3185, 3276, 3354, 3440, 3528, 3612, 3640, 3822, 3870, 3913, 3920, 4095, 4214, 4368, 4410, 4472, 4515, 4680, 4816, 5031, 5040, 5096, 5160, 5418, 5460, 5590, 5733, 5880, 6020, 6192, 6321, 6370, 6552, 6708, 7056, 7224, 7280, 7644, 7740, 7826, 8190, 8385, 8428, 8820, 8944, 9030, 9360, 9555, 10062, 10192, 10320, 10535, 10836, 10920, 11180, 11466, 11739, 11760, 12040, 12642, 12740, 13104, 13416, 13545, 14448, 15288, 15480, 15652, 16380, 16770, 16856, 17640, 18060, 18963, 19110, 19565, 20124, 21070, 21672, 21840, 22360, 22932, 23478, 24080, 25155, 25284, 25480, 26832, 27090, 27391, 28665, 30576, 30960, 31304, 31605, 32760, 33540, 33712, 35217, 35280, 36120, 37926, 38220, 39130, 40248, 42140, 43344, 44720, 45864, 46956, 50310, 50568, 50960, 54180, 54782, 57330, 58695, 62608, 63210, 65520, 67080, 70434, 72240, 75852, 76440, 78260, 80496, 82173, 84280, 91728, 93912, 94815, 100620, 101136, 108360, 109564, 114660, 117390, 126420, 134160, 136955, 140868, 151704, 152880, 156520, 164346, 168560, 176085, 187824, 189630, 201240, 216720, 219128, 229320, 234780, 246519, 252840, 273910, 281736, 303408, 313040, 328692, 352170, 379260, 402480, 410865, 438256, 458640, 469560, 493038, 505680, 547820, 563472, 657384, 704340, 758520, 821730, 939120, 986076, 1095640, 1232595, 1314768, 1408680, 1517040, 1643460, 1972152, 2191280, 2465190, 2817360, 3286920, 3944304, 4930380, 6573840, 9860760, 19721520]

約数ペア:

[(1, 19721520), (2, 9860760), (3, 6573840), (4, 4930380), (5, 3944304), (6, 3286920), (7, 2817360), (8, 2465190), (9, 2191280), (10, 1972152), (12, 1643460), (13, 1517040), (14, 1408680), (15, 1314768), (16, 1232595), (18, 1095640), (20, 986076), (21, 939120), (24, 821730), (26, 758520), (28, 704340), (30, 657384), (35, 563472), (36, 547820), (39, 505680), (40, 493038), (42, 469560), (43, 458640), (45, 438256), (48, 410865), (49, 402480), (52, 379260), (56, 352170), (60, 328692), (63, 313040), (65, 303408), (70, 281736), (72, 273910), (78, 252840), (80, 246519), (84, 234780), (86, 229320), (90, 219128), (91, 216720), (98, 201240), (104, 189630), (105, 187824), (112, 176085), (117, 168560), (120, 164346), (126, 156520), (129, 152880), (130, 151704), (140, 140868), (144, 136955), (147, 134160), (156, 126420), (168, 117390), (172, 114660), (180, 109564), (182, 108360), (195, 101136), (196, 100620), (208, 94815), (210, 93912), (215, 91728), (234, 84280), (240, 82173), (245, 80496), (252, 78260), (258, 76440), (260, 75852), (273, 72240), (280, 70434), (294, 67080), (301, 65520), (312, 63210), (315, 62608), (336, 58695), (344, 57330), (360, 54782), (364, 54180), (387, 50960), (390, 50568), (392, 50310), (420, 46956), (430, 45864), (441, 44720), (455, 43344), (468, 42140), (490, 40248), (504, 39130), (516, 38220), (520, 37926), (546, 36120), (559, 35280), (560, 35217), (585, 33712), (588, 33540), (602, 32760), (624, 31605), (630, 31304), (637, 30960), (645, 30576), (688, 28665), (720, 27391), (728, 27090), (735, 26832), (774, 25480), (780, 25284), (784, 25155), (819, 24080), (840, 23478), (860, 22932), (882, 22360), (903, 21840), (910, 21672), (936, 21070), (980, 20124), (1008, 19565), (1032, 19110), (1040, 18963), (1092, 18060), (1118, 17640), (1170, 16856), (1176, 16770), (1204, 16380), (1260, 15652), (1274, 15480), (1290, 15288), (1365, 14448), (1456, 13545), (1470, 13416), (1505, 13104), (1548, 12740), (1560, 12642), (1638, 12040), (1677, 11760), (1680, 11739), (1720, 11466), (1764, 11180), (1806, 10920), (1820, 10836), (1872, 10535), (1911, 10320), (1935, 10192), (1960, 10062), (2064, 9555), (2107, 9360), (2184, 9030), (2205, 8944), (2236, 8820), (2340, 8428), (2352, 8385), (2408, 8190), (2520, 7826), (2548, 7740), (2580, 7644), (2709, 7280), (2730, 7224), (2795, 7056), (2940, 6708), (3010, 6552), (3096, 6370), (3120, 6321), (3185, 6192), (3276, 6020), (3354, 5880), (3440, 5733), (3528, 5590), (3612, 5460), (3640, 5418), (3822, 5160), (3870, 5096), (3913, 5040), (3920, 5031), (4095, 4816), (4214, 4680), (4368, 4515), (4410, 4472)]