12761980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8287}}^1$

素因数の和:8314

約数の個数: 48

約数和(自身を含む): 33417216

約数和(自身を除く): 20655236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 8287, 16574, 33148, 41435, 58009, 82870, 91157, 116018, 165740, 182314, 232036, 290045, 364628, 455785, 580090, 638099, 911570, 1160180, 1276198, 1823140, 2552396, 3190495, 6380990, 12761980]

約数ペア:

[(1, 12761980), (2, 6380990), (4, 3190495), (5, 2552396), (7, 1823140), (10, 1276198), (11, 1160180), (14, 911570), (20, 638099), (22, 580090), (28, 455785), (35, 364628), (44, 290045), (55, 232036), (70, 182314), (77, 165740), (110, 116018), (140, 91157), (154, 82870), (220, 58009), (308, 41435), (385, 33148), (770, 16574), (1540, 8287)]