21819820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99181}}^1$

素因数の和:99201

約数の個数: 24

約数和(自身を含む): 49987728

約数和(自身を除く): 28167908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99181, 198362, 396724, 495905, 991810, 1090991, 1983620, 2181982, 4363964, 5454955, 10909910, 21819820]

約数ペア:

[(1, 21819820), (2, 10909910), (4, 5454955), (5, 4363964), (10, 2181982), (11, 1983620), (20, 1090991), (22, 991810), (44, 495905), (55, 396724), (110, 198362), (220, 99181)]