65542940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{457}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 141269184

約数和(自身を除く): 75726244

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 142, 202, 284, 355, 404, 457, 505, 710, 914, 1010, 1420, 1828, 2020, 2285, 4570, 7171, 9140, 14342, 28684, 32447, 35855, 46157, 64894, 71710, 92314, 129788, 143420, 162235, 184628, 230785, 324470, 461570, 648940, 923140, 3277147, 6554294, 13108588, 16385735, 32771470, 65542940]

約数ペア:

[(1, 65542940), (2, 32771470), (4, 16385735), (5, 13108588), (10, 6554294), (20, 3277147), (71, 923140), (101, 648940), (142, 461570), (202, 324470), (284, 230785), (355, 184628), (404, 162235), (457, 143420), (505, 129788), (710, 92314), (914, 71710), (1010, 64894), (1420, 46157), (1828, 35855), (2020, 32447), (2285, 28684), (4570, 14342), (7171, 9140)]