20819631

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31981}}^1$

素因数の和:32022

約数の個数: 16

約数和(自身を含む): 32749568

約数和(自身を除く): 11929937

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31981, 95943, 223867, 671601, 991411, 2974233, 6939877, 20819631]

約数ペア:

[(1, 20819631), (3, 6939877), (7, 2974233), (21, 991411), (31, 671601), (93, 223867), (217, 95943), (651, 31981)]