28767640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65381}}^1$

素因数の和:65403

約数の個数: 32

約数和(自身を含む): 70612560

約数和(自身を除く): 41844920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65381, 130762, 261524, 326905, 523048, 653810, 719191, 1307620, 1438382, 2615240, 2876764, 3595955, 5753528, 7191910, 14383820, 28767640]

約数ペア:

[(1, 28767640), (2, 14383820), (4, 7191910), (5, 5753528), (8, 3595955), (10, 2876764), (11, 2615240), (20, 1438382), (22, 1307620), (40, 719191), (44, 653810), (55, 523048), (88, 326905), (110, 261524), (220, 130762), (440, 65381)]