12691090

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{40939}}^1$

素因数の和:40977

約数の個数: 16

約数和(自身を含む): 23581440

約数和(自身を除く): 10890350

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 40939, 81878, 204695, 409390, 1269109, 2538218, 6345545, 12691090]

約数ペア:

[(1, 12691090), (2, 6345545), (5, 2538218), (10, 1269109), (31, 409390), (62, 204695), (155, 81878), (310, 40939)]