20381218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71263}}^1$

素因数の和:71289

約数の個数: 16

約数和(自身を含む): 35917056

約数和(自身を除く): 15535838

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 71263, 142526, 783893, 926419, 1567786, 1852838, 10190609, 20381218]

約数ペア:

[(1, 20381218), (2, 10190609), (11, 1852838), (13, 1567786), (22, 926419), (26, 783893), (143, 142526), (286, 71263)]