21675485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17551}}^1$

素因数の和:17588

約数の個数: 16

約数和(自身を含む): 29487360

約数和(自身を除く): 7811875

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17551, 87755, 228163, 333469, 1140815, 1667345, 4335097, 21675485]

約数ペア:

[(1, 21675485), (5, 4335097), (13, 1667345), (19, 1140815), (65, 333469), (95, 228163), (247, 87755), (1235, 17551)]