21354441

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{811}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 29154048

約数和(自身を除く): 7799607

約数列:

[1, 3, 67, 131, 201, 393, 811, 2433, 8777, 26331, 54337, 106241, 163011, 318723, 7118147, 21354441]

約数ペア:

[(1, 21354441), (3, 7118147), (67, 318723), (131, 163011), (201, 106241), (393, 54337), (811, 26331), (2433, 8777)]