21781786

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{2531}}^1$

素因数の和:2877

約数の個数: 16

約数和(自身を含む): 35306208

約数和(自身を除く): 13524422

約数列:

[1, 2, 13, 26, 331, 662, 2531, 4303, 5062, 8606, 32903, 65806, 837761, 1675522, 10890893, 21781786]

約数ペア:

[(1, 21781786), (2, 10890893), (13, 1675522), (26, 837761), (331, 65806), (662, 32903), (2531, 8606), (4303, 5062)]