3998380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6449}}^1$

素因数の和:6489

約数の個数: 24

約数和(自身を含む): 8668800

約数和(自身を除く): 4670420

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 6449, 12898, 25796, 32245, 64490, 128980, 199919, 399838, 799676, 999595, 1999190, 3998380]

約数ペア:

[(1, 3998380), (2, 1999190), (4, 999595), (5, 799676), (10, 399838), (20, 199919), (31, 128980), (62, 64490), (124, 32245), (155, 25796), (310, 12898), (620, 6449)]