20853405

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2843}}^1$

素因数の和:3017

約数の個数: 24

約数和(自身を含む): 36380448

約数和(自身を除く): 15527043

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2843, 7335, 8529, 14215, 25587, 42645, 127935, 463409, 1390227, 2317045, 4170681, 6951135, 20853405]

約数ペア:

[(1, 20853405), (3, 6951135), (5, 4170681), (9, 2317045), (15, 1390227), (45, 463409), (163, 127935), (489, 42645), (815, 25587), (1467, 14215), (2445, 8529), (2843, 7335)]