21959725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{557}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 29060640

約数和(自身を除く): 7100915

約数列:

[1, 5, 19, 25, 83, 95, 415, 475, 557, 1577, 2075, 2785, 7885, 10583, 13925, 39425, 46231, 52915, 231155, 264575, 878389, 1155775, 4391945, 21959725]

約数ペア:

[(1, 21959725), (5, 4391945), (19, 1155775), (25, 878389), (83, 264575), (95, 231155), (415, 52915), (475, 46231), (557, 39425), (1577, 13925), (2075, 10583), (2785, 7885)]