20539897

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{1129}}^1$

素因数の和:1272

約数の個数: 16

約数和(自身を含む): 24733440

約数和(自身を除く): 4193543

約数列:

[1, 7, 23, 113, 161, 791, 1129, 2599, 7903, 18193, 25967, 127577, 181769, 893039, 2934271, 20539897]

約数ペア:

[(1, 20539897), (7, 2934271), (23, 893039), (113, 181769), (161, 127577), (791, 25967), (1129, 18193), (2599, 7903)]