18861875

素因数分解:

$5^4\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:416

約数の個数: 20

約数和(自身を含む): 23879856

約数和(自身を除く): 5017981

約数列:

[1, 5, 25, 103, 125, 293, 515, 625, 1465, 2575, 7325, 12875, 30179, 36625, 64375, 150895, 183125, 754475, 3772375, 18861875]

約数ペア:

[(1, 18861875), (5, 3772375), (25, 754475), (103, 183125), (125, 150895), (293, 64375), (515, 36625), (625, 30179), (1465, 12875), (2575, 7325)]