20990406

素因数分解:

$2^1\times 3^1\times {\mathrm{313}}^1\times {\mathrm{11177}}^1$

素因数の和:11495

約数の個数: 16

約数和(自身を含む): 42118704

約数和(自身を除く): 21128298

約数列:

[1, 2, 3, 6, 313, 626, 939, 1878, 11177, 22354, 33531, 67062, 3498401, 6996802, 10495203, 20990406]

約数ペア:

[(1, 20990406), (2, 10495203), (3, 6996802), (6, 3498401), (313, 67062), (626, 33531), (939, 22354), (1878, 11177)]