1977009980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8986409}}^1$

素因数の和:8986429

約数の個数: 24

約数和(自身を含む): 4529150640

約数和(自身を除く): 2552140660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 8986409, 17972818, 35945636, 44932045, 89864090, 98850499, 179728180, 197700998, 395401996, 494252495, 988504990, 1977009980]

約数ペア:

[(1, 1977009980), (2, 988504990), (4, 494252495), (5, 395401996), (10, 197700998), (11, 179728180), (20, 98850499), (22, 89864090), (44, 44932045), (55, 35945636), (110, 17972818), (220, 8986409)]