61656440

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{3089}}^1$

素因数の和:3599

約数の個数: 32

約数和(自身を含む): 139050000

約数和(自身を除く): 77393560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1996, 2495, 3089, 3992, 4990, 6178, 9980, 12356, 15445, 19960, 24712, 30890, 61780, 123560, 1541411, 3082822, 6165644, 7707055, 12331288, 15414110, 30828220, 61656440]

約数ペア:

[(1, 61656440), (2, 30828220), (4, 15414110), (5, 12331288), (8, 7707055), (10, 6165644), (20, 3082822), (40, 1541411), (499, 123560), (998, 61780), (1996, 30890), (2495, 24712), (3089, 19960), (3992, 15445), (4990, 12356), (6178, 9980)]