21775820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98981}}^1$

素因数の和:99001

約数の個数: 24

約数和(自身を含む): 49886928

約数和(自身を除く): 28111108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98981, 197962, 395924, 494905, 989810, 1088791, 1979620, 2177582, 4355164, 5443955, 10887910, 21775820]

約数ペア:

[(1, 21775820), (2, 10887910), (4, 5443955), (5, 4355164), (10, 2177582), (11, 1979620), (20, 1088791), (22, 989810), (44, 494905), (55, 395924), (110, 197962), (220, 98981)]