20651611

素因数分解:

${\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:322

約数の個数: 16

約数和(自身を含む): 22125568

約数和(自身を除く): 1473957

約数列:

[1, 31, 61, 67, 163, 1891, 2077, 4087, 5053, 9943, 10921, 126697, 308233, 338551, 666181, 20651611]

約数ペア:

[(1, 20651611), (31, 666181), (61, 338551), (67, 308233), (163, 126697), (1891, 10921), (2077, 9943), (4087, 5053)]