20120389905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4129}}^1\times {\mathrm{4219}}^1$

素因数の和:8374

約数の個数: 64

約数和(自身を含む): 40155494400

約数和(自身を除く): 20035104495

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 4129, 4219, 12387, 12657, 20645, 21095, 28903, 29533, 45419, 46409, 61935, 63285, 86709, 88599, 136257, 139227, 144515, 147665, 227095, 232045, 317933, 324863, 433545, 442995, 681285, 696135, 953799, 974589, 1589665, 1624315, 4768995, 4872945, 17420251, 52260753, 87101255, 121941757, 191622761, 261303765, 365825271, 574868283, 609708785, 958113805, 1341359327, 1829126355, 2874341415, 4024077981, 6706796635, 20120389905]

約数ペア:

[(1, 20120389905), (3, 6706796635), (5, 4024077981), (7, 2874341415), (11, 1829126355), (15, 1341359327), (21, 958113805), (33, 609708785), (35, 574868283), (55, 365825271), (77, 261303765), (105, 191622761), (165, 121941757), (231, 87101255), (385, 52260753), (1155, 17420251), (4129, 4872945), (4219, 4768995), (12387, 1624315), (12657, 1589665), (20645, 974589), (21095, 953799), (28903, 696135), (29533, 681285), (45419, 442995), (46409, 433545), (61935, 324863), (63285, 317933), (86709, 232045), (88599, 227095), (136257, 147665), (139227, 144515)]