28815820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130981}}^1$

素因数の和:131001

約数の個数: 24

約数和(自身を含む): 66014928

約数和(自身を除く): 37199108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 130981, 261962, 523924, 654905, 1309810, 1440791, 2619620, 2881582, 5763164, 7203955, 14407910, 28815820]

約数ペア:

[(1, 28815820), (2, 14407910), (4, 7203955), (5, 5763164), (10, 2881582), (11, 2619620), (20, 1440791), (22, 1309810), (44, 654905), (55, 523924), (110, 261962), (220, 130981)]