21198500

素因数分解:

$2^2\times 5^3\times {\mathrm{42397}}^1$

素因数の和:42416

約数の個数: 24

約数和(自身を含む): 46298616

約数和(自身を除く): 25100116

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 42397, 84794, 169588, 211985, 423970, 847940, 1059925, 2119850, 4239700, 5299625, 10599250, 21198500]

約数ペア:

[(1, 21198500), (2, 10599250), (4, 5299625), (5, 4239700), (10, 2119850), (20, 1059925), (25, 847940), (50, 423970), (100, 211985), (125, 169588), (250, 84794), (500, 42397)]