21243640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48281}}^1$

素因数の和:48303

約数の個数: 32

約数和(自身を含む): 52144560

約数和(自身を除く): 30900920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48281, 96562, 193124, 241405, 386248, 482810, 531091, 965620, 1062182, 1931240, 2124364, 2655455, 4248728, 5310910, 10621820, 21243640]

約数ペア:

[(1, 21243640), (2, 10621820), (4, 5310910), (5, 4248728), (8, 2655455), (10, 2124364), (11, 1931240), (20, 1062182), (22, 965620), (40, 531091), (44, 482810), (55, 386248), (88, 241405), (110, 193124), (220, 96562), (440, 48281)]