19878280

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8423}}^1$

素因数の和:8493

約数の個数: 32

約数和(自身を含む): 45489600

約数和(自身を除く): 25611320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8423, 16846, 33692, 42115, 67384, 84230, 168460, 336920, 496957, 993914, 1987828, 2484785, 3975656, 4969570, 9939140, 19878280]

約数ペア:

[(1, 19878280), (2, 9939140), (4, 4969570), (5, 3975656), (8, 2484785), (10, 1987828), (20, 993914), (40, 496957), (59, 336920), (118, 168460), (236, 84230), (295, 67384), (472, 42115), (590, 33692), (1180, 16846), (2360, 8423)]