21817924

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{701}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 39626496

約数和(自身を除く): 17808572

約数列:

[1, 2, 4, 31, 62, 124, 251, 502, 701, 1004, 1402, 2804, 7781, 15562, 21731, 31124, 43462, 86924, 175951, 351902, 703804, 5454481, 10908962, 21817924]

約数ペア:

[(1, 21817924), (2, 10908962), (4, 5454481), (31, 703804), (62, 351902), (124, 175951), (251, 86924), (502, 43462), (701, 31124), (1004, 21731), (1402, 15562), (2804, 7781)]