20872090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{122777}}^1$

素因数の和:122801

約数の個数: 16

約数和(自身を含む): 39780072

約数和(自身を除く): 18907982

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 122777, 245554, 613885, 1227770, 2087209, 4174418, 10436045, 20872090]

約数ペア:

[(1, 20872090), (2, 10436045), (5, 4174418), (10, 2087209), (17, 1227770), (34, 613885), (85, 245554), (170, 122777)]