20215091

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 24893568

約数和(自身を除く): 4678477

約数列:

[1, 13, 17, 23, 41, 97, 221, 299, 391, 533, 697, 943, 1261, 1649, 2231, 3977, 5083, 9061, 12259, 16031, 21437, 29003, 37927, 51701, 67609, 91471, 208403, 493051, 878917, 1189123, 1555007, 20215091]

約数ペア:

[(1, 20215091), (13, 1555007), (17, 1189123), (23, 878917), (41, 493051), (97, 208403), (221, 91471), (299, 67609), (391, 51701), (533, 37927), (697, 29003), (943, 21437), (1261, 16031), (1649, 12259), (2231, 9061), (3977, 5083)]