20415897

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{1657}}^1$

素因数の和:1737

約数の個数: 18

約数和(自身を含む): 30326478

約数和(自身を除く): 9910581

約数列:

[1, 3, 9, 37, 111, 333, 1369, 1657, 4107, 4971, 12321, 14913, 61309, 183927, 551781, 2268433, 6805299, 20415897]

約数ペア:

[(1, 20415897), (3, 6805299), (9, 2268433), (37, 551781), (111, 183927), (333, 61309), (1369, 14913), (1657, 12321), (4107, 4971)]