21960440

素因数分解:

$2^3\times 5^1\times {\mathrm{549011}}^1$

素因数の和:549022

約数の個数: 16

約数和(自身を含む): 49411080

約数和(自身を除く): 27450640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 549011, 1098022, 2196044, 2745055, 4392088, 5490110, 10980220, 21960440]

約数ペア:

[(1, 21960440), (2, 10980220), (4, 5490110), (5, 4392088), (8, 2745055), (10, 2196044), (20, 1098022), (40, 549011)]