21106756

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43609}}^1$

素因数の和:43635

約数の個数: 18

約数和(自身を含む): 40600910

約数和(自身を除く): 19494154

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43609, 87218, 174436, 479699, 959398, 1918796, 5276689, 10553378, 21106756]

約数ペア:

[(1, 21106756), (2, 10553378), (4, 5276689), (11, 1918796), (22, 959398), (44, 479699), (121, 174436), (242, 87218), (484, 43609)]