20996870420

素因数分解:

$2^2\times 5^1\times {\mathrm{1049843521}}^1$

素因数の和:1049843530

約数の個数: 12

約数和(自身を含む): 44093427924

約数和(自身を除く): 23096557504

約数列:

[1, 2, 4, 5, 10, 20, 1049843521, 2099687042, 4199374084, 5249217605, 10498435210, 20996870420]

約数ペア:

[(1, 20996870420), (2, 10498435210), (4, 5249217605), (5, 4199374084), (10, 2099687042), (20, 1049843521)]