20089777981

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31538113}}^1$

素因数の和:31538140

約数の個数: 12

約数和(自身を含む): 25167414972

約数和(自身を除く): 5077636991

約数列:

[1, 7, 13, 49, 91, 637, 31538113, 220766791, 409995469, 1545367537, 2869968283, 20089777981]

約数ペア:

[(1, 20089777981), (7, 2869968283), (13, 1545367537), (49, 409995469), (91, 220766791), (637, 31538113)]