221635640

素因数分解:

$2^3\times 5^1\times {\mathrm{5540891}}^1$

素因数の和:5540902

約数の個数: 16

約数和(自身を含む): 498680280

約数和(自身を除く): 277044640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5540891, 11081782, 22163564, 27704455, 44327128, 55408910, 110817820, 221635640]

約数ペア:

[(1, 221635640), (2, 110817820), (4, 55408910), (5, 44327128), (8, 27704455), (10, 22163564), (20, 11081782), (40, 5540891)]