21038171

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{631}}^1$

素因数の和:1082

約数の個数: 16

約数和(自身を含む): 26331648

約数和(自身を除く): 5293477

約数列:

[1, 7, 11, 77, 433, 631, 3031, 4417, 4763, 6941, 33341, 48587, 273223, 1912561, 3005453, 21038171]

約数ペア:

[(1, 21038171), (7, 3005453), (11, 1912561), (77, 273223), (433, 48587), (631, 33341), (3031, 6941), (4417, 4763)]