18516880

素因数分解:

$2^4\times 5^1\times {\mathrm{231461}}^1$

素因数の和:231474

約数の個数: 20

約数和(自身を含む): 43051932

約数和(自身を除く): 24535052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 231461, 462922, 925844, 1157305, 1851688, 2314610, 3703376, 4629220, 9258440, 18516880]

約数ペア:

[(1, 18516880), (2, 9258440), (4, 4629220), (5, 3703376), (8, 2314610), (10, 1851688), (16, 1157305), (20, 925844), (40, 462922), (80, 231461)]