15391225

素因数分解:

$5^2\times {\mathrm{761}}^1\times {\mathrm{809}}^1$

素因数の和:1580

約数の個数: 12

約数和(自身を含む): 19133820

約数和(自身を除く): 3742595

約数列:

[1, 5, 25, 761, 809, 3805, 4045, 19025, 20225, 615649, 3078245, 15391225]

約数ペア:

[(1, 15391225), (5, 3078245), (25, 615649), (761, 20225), (809, 19025), (3805, 4045)]