20982609

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 31111080

約数和(自身を除く): 10128471

約数列:

[1, 3, 9, 73, 109, 219, 293, 327, 657, 879, 981, 2637, 7957, 21389, 23871, 31937, 64167, 71613, 95811, 192501, 287433, 2331401, 6994203, 20982609]

約数ペア:

[(1, 20982609), (3, 6994203), (9, 2331401), (73, 287433), (109, 192501), (219, 95811), (293, 71613), (327, 64167), (657, 31937), (879, 23871), (981, 21389), (2637, 7957)]