90235640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{205081}}^1$

素因数の和:205103

約数の個数: 32

約数和(自身を含む): 221488560

約数和(自身を除く): 131252920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 205081, 410162, 820324, 1025405, 1640648, 2050810, 2255891, 4101620, 4511782, 8203240, 9023564, 11279455, 18047128, 22558910, 45117820, 90235640]

約数ペア:

[(1, 90235640), (2, 45117820), (4, 22558910), (5, 18047128), (8, 11279455), (10, 9023564), (11, 8203240), (20, 4511782), (22, 4101620), (40, 2255891), (44, 2050810), (55, 1640648), (88, 1025405), (110, 820324), (220, 410162), (440, 205081)]