20491335

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4421}}^1$

素因数の和:4535

約数の個数: 24

約数和(自身を含む): 35871264

約数和(自身を除く): 15379929

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4421, 4635, 13263, 22105, 39789, 66315, 198945, 455363, 1366089, 2276815, 4098267, 6830445, 20491335]

約数ペア:

[(1, 20491335), (3, 6830445), (5, 4098267), (9, 2276815), (15, 1366089), (45, 455363), (103, 198945), (309, 66315), (515, 39789), (927, 22105), (1545, 13263), (4421, 4635)]