213888620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{972221}}^1$

素因数の和:972241

約数の個数: 24

約数和(自身を含む): 489999888

約数和(自身を除く): 276111268

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 972221, 1944442, 3888884, 4861105, 9722210, 10694431, 19444420, 21388862, 42777724, 53472155, 106944310, 213888620]

約数ペア:

[(1, 213888620), (2, 106944310), (4, 53472155), (5, 42777724), (10, 21388862), (11, 19444420), (20, 10694431), (22, 9722210), (44, 4861105), (55, 3888884), (110, 1944442), (220, 972221)]