20935640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47581}}^1$

素因数の和:47603

約数の個数: 32

約数和(自身を含む): 51388560

約数和(自身を除く): 30452920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47581, 95162, 190324, 237905, 380648, 475810, 523391, 951620, 1046782, 1903240, 2093564, 2616955, 4187128, 5233910, 10467820, 20935640]

約数ペア:

[(1, 20935640), (2, 10467820), (4, 5233910), (5, 4187128), (8, 2616955), (10, 2093564), (11, 1903240), (20, 1046782), (22, 951620), (40, 523391), (44, 475810), (55, 380648), (88, 237905), (110, 190324), (220, 95162), (440, 47581)]