21261877

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7537}}^1$

素因数の和:7588

約数の個数: 16

約数和(自身を含む): 27016192

約数和(自身を除く): 5754315

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7537, 52759, 97981, 233647, 685867, 1635529, 3037411, 21261877]

約数ペア:

[(1, 21261877), (7, 3037411), (13, 1635529), (31, 685867), (91, 233647), (217, 97981), (403, 52759), (2821, 7537)]