20868120

素因数分解:

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

素因数の和:64

約数の個数: 288

約数和(自身を含む): 85644000

約数和(自身を除く): 64775880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 49, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 98, 104, 105, 117, 120, 126, 130, 140, 147, 156, 168, 169, 180, 182, 195, 196, 210, 234, 245, 252, 260, 273, 280, 294, 312, 315, 338, 343, 360, 364, 390, 392, 420, 441, 455, 468, 490, 504, 507, 520, 546, 585, 588, 630, 637, 676, 686, 728, 735, 780, 819, 840, 845, 882, 910, 936, 980, 1014, 1029, 1092, 1170, 1176, 1183, 1260, 1274, 1352, 1365, 1372, 1470, 1521, 1560, 1638, 1690, 1715, 1764, 1820, 1911, 1960, 2028, 2058, 2184, 2205, 2340, 2366, 2520, 2535, 2548, 2730, 2744, 2940, 3042, 3087, 3185, 3276, 3380, 3430, 3528, 3549, 3640, 3822, 4056, 4095, 4116, 4410, 4459, 4680, 4732, 5070, 5096, 5145, 5460, 5733, 5880, 5915, 6084, 6174, 6370, 6552, 6760, 6860, 7098, 7605, 7644, 8190, 8232, 8281, 8820, 8918, 9464, 9555, 10140, 10290, 10647, 10920, 11466, 11830, 12168, 12348, 12740, 13377, 13720, 14196, 15210, 15288, 15435, 16380, 16562, 17640, 17745, 17836, 19110, 20280, 20580, 21294, 22295, 22932, 23660, 24696, 24843, 25480, 26754, 28392, 28665, 30420, 30870, 32760, 33124, 35490, 35672, 38220, 40131, 41160, 41405, 42588, 44590, 45864, 47320, 49686, 53235, 53508, 57330, 57967, 60840, 61740, 66248, 66885, 70980, 74529, 76440, 80262, 82810, 85176, 89180, 99372, 106470, 107016, 114660, 115934, 123480, 124215, 133770, 141960, 149058, 160524, 165620, 173901, 178360, 198744, 200655, 212940, 229320, 231868, 248430, 267540, 289835, 298116, 321048, 331240, 347802, 372645, 401310, 425880, 463736, 496860, 521703, 535080, 579670, 596232, 695604, 745290, 802620, 869505, 993720, 1043406, 1159340, 1391208, 1490580, 1605240, 1739010, 2086812, 2318680, 2608515, 2981160, 3478020, 4173624, 5217030, 6956040, 10434060, 20868120]

約数ペア:

[(1, 20868120), (2, 10434060), (3, 6956040), (4, 5217030), (5, 4173624), (6, 3478020), (7, 2981160), (8, 2608515), (9, 2318680), (10, 2086812), (12, 1739010), (13, 1605240), (14, 1490580), (15, 1391208), (18, 1159340), (20, 1043406), (21, 993720), (24, 869505), (26, 802620), (28, 745290), (30, 695604), (35, 596232), (36, 579670), (39, 535080), (40, 521703), (42, 496860), (45, 463736), (49, 425880), (52, 401310), (56, 372645), (60, 347802), (63, 331240), (65, 321048), (70, 298116), (72, 289835), (78, 267540), (84, 248430), (90, 231868), (91, 229320), (98, 212940), (104, 200655), (105, 198744), (117, 178360), (120, 173901), (126, 165620), (130, 160524), (140, 149058), (147, 141960), (156, 133770), (168, 124215), (169, 123480), (180, 115934), (182, 114660), (195, 107016), (196, 106470), (210, 99372), (234, 89180), (245, 85176), (252, 82810), (260, 80262), (273, 76440), (280, 74529), (294, 70980), (312, 66885), (315, 66248), (338, 61740), (343, 60840), (360, 57967), (364, 57330), (390, 53508), (392, 53235), (420, 49686), (441, 47320), (455, 45864), (468, 44590), (490, 42588), (504, 41405), (507, 41160), (520, 40131), (546, 38220), (585, 35672), (588, 35490), (630, 33124), (637, 32760), (676, 30870), (686, 30420), (728, 28665), (735, 28392), (780, 26754), (819, 25480), (840, 24843), (845, 24696), (882, 23660), (910, 22932), (936, 22295), (980, 21294), (1014, 20580), (1029, 20280), (1092, 19110), (1170, 17836), (1176, 17745), (1183, 17640), (1260, 16562), (1274, 16380), (1352, 15435), (1365, 15288), (1372, 15210), (1470, 14196), (1521, 13720), (1560, 13377), (1638, 12740), (1690, 12348), (1715, 12168), (1764, 11830), (1820, 11466), (1911, 10920), (1960, 10647), (2028, 10290), (2058, 10140), (2184, 9555), (2205, 9464), (2340, 8918), (2366, 8820), (2520, 8281), (2535, 8232), (2548, 8190), (2730, 7644), (2744, 7605), (2940, 7098), (3042, 6860), (3087, 6760), (3185, 6552), (3276, 6370), (3380, 6174), (3430, 6084), (3528, 5915), (3549, 5880), (3640, 5733), (3822, 5460), (4056, 5145), (4095, 5096), (4116, 5070), (4410, 4732), (4459, 4680)]