15630625

素因数分解:

$5^4\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 20

約数和(自身を含む): 19821780

約数和(自身を除く): 4191155

約数列:

[1, 5, 25, 89, 125, 281, 445, 625, 1405, 2225, 7025, 11125, 25009, 35125, 55625, 125045, 175625, 625225, 3126125, 15630625]

約数ペア:

[(1, 15630625), (5, 3126125), (25, 625225), (89, 175625), (125, 125045), (281, 55625), (445, 35125), (625, 25009), (1405, 11125), (2225, 7025)]