20528415

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^2$

素因数の和:260

約数の個数: 36

約数和(自身を含む): 36767016

約数和(自身を除く): 16238601

約数列:

[1, 3, 5, 9, 15, 43, 45, 103, 129, 215, 309, 387, 515, 645, 927, 1545, 1935, 4429, 4635, 10609, 13287, 22145, 31827, 39861, 53045, 66435, 95481, 159135, 199305, 456187, 477405, 1368561, 2280935, 4105683, 6842805, 20528415]

約数ペア:

[(1, 20528415), (3, 6842805), (5, 4105683), (9, 2280935), (15, 1368561), (43, 477405), (45, 456187), (103, 199305), (129, 159135), (215, 95481), (309, 66435), (387, 53045), (515, 39861), (645, 31827), (927, 22145), (1545, 13287), (1935, 10609), (4429, 4635)]