21997080

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 288

約数和(自身を含む): 88030800

約数和(自身を除く): 66033720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 29, 30, 35, 36, 40, 42, 43, 45, 49, 56, 58, 60, 63, 70, 72, 84, 86, 87, 90, 98, 105, 116, 120, 126, 129, 140, 145, 147, 168, 172, 174, 180, 196, 203, 210, 215, 232, 245, 252, 258, 261, 280, 290, 294, 301, 315, 344, 348, 360, 387, 392, 406, 420, 430, 435, 441, 490, 504, 516, 522, 580, 588, 602, 609, 630, 645, 696, 735, 774, 812, 840, 860, 870, 882, 903, 980, 1015, 1032, 1044, 1160, 1176, 1204, 1218, 1247, 1260, 1290, 1305, 1421, 1470, 1505, 1548, 1624, 1720, 1740, 1764, 1806, 1827, 1935, 1960, 2030, 2088, 2107, 2205, 2408, 2436, 2494, 2520, 2580, 2610, 2709, 2842, 2940, 3010, 3045, 3096, 3480, 3528, 3612, 3654, 3741, 3870, 4060, 4214, 4263, 4410, 4515, 4872, 4988, 5160, 5220, 5418, 5684, 5880, 6020, 6090, 6235, 6321, 7105, 7224, 7308, 7482, 7740, 8120, 8428, 8526, 8729, 8820, 9030, 9135, 9976, 10440, 10535, 10836, 11223, 11368, 12040, 12180, 12470, 12642, 12789, 13545, 14210, 14616, 14964, 15480, 16856, 17052, 17458, 17640, 18060, 18270, 18705, 18963, 21070, 21315, 21672, 22446, 24360, 24940, 25284, 25578, 26187, 27090, 28420, 29928, 31605, 34104, 34916, 36120, 36540, 37410, 37926, 42140, 42630, 43645, 44892, 49880, 50568, 51156, 52374, 54180, 56115, 56840, 61103, 63210, 63945, 69832, 73080, 74820, 75852, 78561, 84280, 85260, 87290, 89784, 94815, 102312, 104748, 108360, 112230, 122206, 126420, 127890, 130935, 149640, 151704, 157122, 170520, 174580, 183309, 189630, 209496, 224460, 244412, 252840, 255780, 261870, 305515, 314244, 349160, 366618, 379260, 392805, 448920, 488824, 511560, 523740, 549927, 611030, 628488, 733236, 758520, 785610, 916545, 1047480, 1099854, 1222060, 1466472, 1571220, 1833090, 2199708, 2444120, 2749635, 3142440, 3666180, 4399416, 5499270, 7332360, 10998540, 21997080]

約数ペア:

[(1, 21997080), (2, 10998540), (3, 7332360), (4, 5499270), (5, 4399416), (6, 3666180), (7, 3142440), (8, 2749635), (9, 2444120), (10, 2199708), (12, 1833090), (14, 1571220), (15, 1466472), (18, 1222060), (20, 1099854), (21, 1047480), (24, 916545), (28, 785610), (29, 758520), (30, 733236), (35, 628488), (36, 611030), (40, 549927), (42, 523740), (43, 511560), (45, 488824), (49, 448920), (56, 392805), (58, 379260), (60, 366618), (63, 349160), (70, 314244), (72, 305515), (84, 261870), (86, 255780), (87, 252840), (90, 244412), (98, 224460), (105, 209496), (116, 189630), (120, 183309), (126, 174580), (129, 170520), (140, 157122), (145, 151704), (147, 149640), (168, 130935), (172, 127890), (174, 126420), (180, 122206), (196, 112230), (203, 108360), (210, 104748), (215, 102312), (232, 94815), (245, 89784), (252, 87290), (258, 85260), (261, 84280), (280, 78561), (290, 75852), (294, 74820), (301, 73080), (315, 69832), (344, 63945), (348, 63210), (360, 61103), (387, 56840), (392, 56115), (406, 54180), (420, 52374), (430, 51156), (435, 50568), (441, 49880), (490, 44892), (504, 43645), (516, 42630), (522, 42140), (580, 37926), (588, 37410), (602, 36540), (609, 36120), (630, 34916), (645, 34104), (696, 31605), (735, 29928), (774, 28420), (812, 27090), (840, 26187), (860, 25578), (870, 25284), (882, 24940), (903, 24360), (980, 22446), (1015, 21672), (1032, 21315), (1044, 21070), (1160, 18963), (1176, 18705), (1204, 18270), (1218, 18060), (1247, 17640), (1260, 17458), (1290, 17052), (1305, 16856), (1421, 15480), (1470, 14964), (1505, 14616), (1548, 14210), (1624, 13545), (1720, 12789), (1740, 12642), (1764, 12470), (1806, 12180), (1827, 12040), (1935, 11368), (1960, 11223), (2030, 10836), (2088, 10535), (2107, 10440), (2205, 9976), (2408, 9135), (2436, 9030), (2494, 8820), (2520, 8729), (2580, 8526), (2610, 8428), (2709, 8120), (2842, 7740), (2940, 7482), (3010, 7308), (3045, 7224), (3096, 7105), (3480, 6321), (3528, 6235), (3612, 6090), (3654, 6020), (3741, 5880), (3870, 5684), (4060, 5418), (4214, 5220), (4263, 5160), (4410, 4988), (4515, 4872)]