21725680

素因数分解:

$2^4\times 5^1\times {\mathrm{271571}}^1$

素因数の和:271584

約数の個数: 20

約数和(自身を含む): 50512392

約数和(自身を除く): 28786712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271571, 543142, 1086284, 1357855, 2172568, 2715710, 4345136, 5431420, 10862840, 21725680]

約数ペア:

[(1, 21725680), (2, 10862840), (4, 5431420), (5, 4345136), (8, 2715710), (10, 2172568), (16, 1357855), (20, 1086284), (40, 543142), (80, 271571)]