21891544

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51631}}^1$

素因数の和:51690

約数の個数: 16

約数和(自身を含む): 41821920

約数和(自身を除く): 19930376

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51631, 103262, 206524, 413048, 2736443, 5472886, 10945772, 21891544]

約数ペア:

[(1, 21891544), (2, 10945772), (4, 5472886), (8, 2736443), (53, 413048), (106, 206524), (212, 103262), (424, 51631)]