19635620

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2473}}^1$

素因数の和:2879

約数の個数: 24

約数和(自身を含む): 41355384

約数和(自身を除く): 21719764

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2473, 3970, 4946, 7940, 9892, 12365, 24730, 49460, 981781, 1963562, 3927124, 4908905, 9817810, 19635620]

約数ペア:

[(1, 19635620), (2, 9817810), (4, 4908905), (5, 3927124), (10, 1963562), (20, 981781), (397, 49460), (794, 24730), (1588, 12365), (1985, 9892), (2473, 7940), (3970, 4946)]