20959130

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123289}}^1$

素因数の和:123313

約数の個数: 16

約数和(自身を含む): 39945960

約数和(自身を除く): 18986830

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123289, 246578, 616445, 1232890, 2095913, 4191826, 10479565, 20959130]

約数ペア:

[(1, 20959130), (2, 10479565), (5, 4191826), (10, 2095913), (17, 1232890), (34, 616445), (85, 246578), (170, 123289)]