21136408

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24239}}^1$

素因数の和:24354

約数の個数: 16

約数和(自身を含む): 39996000

約数和(自身を除く): 18859592

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24239, 48478, 96956, 193912, 2642051, 5284102, 10568204, 21136408]

約数ペア:

[(1, 21136408), (2, 10568204), (4, 5284102), (8, 2642051), (109, 193912), (218, 96956), (436, 48478), (872, 24239)]