20418555

素因数分解:

$3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{4349}}^1$

素因数の和:4670

約数の個数: 16

約数和(自身を含む): 32781600

約数和(自身を除く): 12363045

約数列:

[1, 3, 5, 15, 313, 939, 1565, 4349, 4695, 13047, 21745, 65235, 1361237, 4083711, 6806185, 20418555]

約数ペア:

[(1, 20418555), (3, 6806185), (5, 4083711), (15, 1361237), (313, 65235), (939, 21745), (1565, 13047), (4349, 4695)]