25758380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 56700000

約数和(自身を除く): 30941620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 445, 499, 580, 890, 998, 1780, 1996, 2495, 2581, 4990, 5162, 9980, 10324, 12905, 14471, 25810, 28942, 44411, 51620, 57884, 72355, 88822, 144710, 177644, 222055, 289420, 444110, 888220, 1287919, 2575838, 5151676, 6439595, 12879190, 25758380]

約数ペア:

[(1, 25758380), (2, 12879190), (4, 6439595), (5, 5151676), (10, 2575838), (20, 1287919), (29, 888220), (58, 444110), (89, 289420), (116, 222055), (145, 177644), (178, 144710), (290, 88822), (356, 72355), (445, 57884), (499, 51620), (580, 44411), (890, 28942), (998, 25810), (1780, 14471), (1996, 12905), (2495, 10324), (2581, 9980), (4990, 5162)]