20178860290

素因数分解:

$2^1\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{1580177}}^1$

素因数の和:1581461

約数の個数: 16

約数和(自身を含む): 36350414712

約数和(自身を除く): 16171554422

約数列:

[1, 2, 5, 10, 1277, 2554, 6385, 12770, 1580177, 3160354, 7900885, 15801770, 2017886029, 4035772058, 10089430145, 20178860290]

約数ペア:

[(1, 20178860290), (2, 10089430145), (5, 4035772058), (10, 2017886029), (1277, 15801770), (2554, 7900885), (6385, 3160354), (12770, 1580177)]