1987037420

素因数分解:

$2^2\times 5^1\times {\mathrm{99351871}}^1$

素因数の和:99351880

約数の個数: 12

約数和(自身を含む): 4172778624

約数和(自身を除く): 2185741204

約数列:

[1, 2, 4, 5, 10, 20, 99351871, 198703742, 397407484, 496759355, 993518710, 1987037420]

約数ペア:

[(1, 1987037420), (2, 993518710), (4, 496759355), (5, 397407484), (10, 198703742), (20, 99351871)]