399173890

素因数分解:

$2^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{54907}}^1$

素因数の和:55641

約数の個数: 16

約数和(自身を含む): 719514432

約数和(自身を除く): 320340542

約数列:

[1, 2, 5, 10, 727, 1454, 3635, 7270, 54907, 109814, 274535, 549070, 39917389, 79834778, 199586945, 399173890]

約数ペア:

[(1, 399173890), (2, 199586945), (5, 79834778), (10, 39917389), (727, 549070), (1454, 274535), (3635, 109814), (7270, 54907)]