19648360

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1201}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 44353800

約数和(自身を除く): 24705440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1201, 1636, 2045, 2402, 3272, 4090, 4804, 6005, 8180, 9608, 12010, 16360, 24020, 48040, 491209, 982418, 1964836, 2456045, 3929672, 4912090, 9824180, 19648360]

約数ペア:

[(1, 19648360), (2, 9824180), (4, 4912090), (5, 3929672), (8, 2456045), (10, 1964836), (20, 982418), (40, 491209), (409, 48040), (818, 24020), (1201, 16360), (1636, 12010), (2045, 9608), (2402, 8180), (3272, 6005), (4090, 4804)]