21122571

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{757}}^1$

素因数の和:962

約数の個数: 16

約数和(自身を含む): 28816128

約数和(自身を除く): 7693557

約数列:

[1, 3, 71, 131, 213, 393, 757, 2271, 9301, 27903, 53747, 99167, 161241, 297501, 7040857, 21122571]

約数ペア:

[(1, 21122571), (3, 7040857), (71, 297501), (131, 161241), (213, 99167), (393, 53747), (757, 27903), (2271, 9301)]