21838564

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{45121}}^1$

素因数の和:45147

約数の個数: 18

約数和(自身を含む): 42008582

約数和(自身を除く): 20170018

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 45121, 90242, 180484, 496331, 992662, 1985324, 5459641, 10919282, 21838564]

約数ペア:

[(1, 21838564), (2, 10919282), (4, 5459641), (11, 1985324), (22, 992662), (44, 496331), (121, 180484), (242, 90242), (484, 45121)]