18916965

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2579}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 33003360

約数和(自身を除く): 14086395

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2579, 7335, 7737, 12895, 23211, 38685, 116055, 420377, 1261131, 2101885, 3783393, 6305655, 18916965]

約数ペア:

[(1, 18916965), (3, 6305655), (5, 3783393), (9, 2101885), (15, 1261131), (45, 420377), (163, 116055), (489, 38685), (815, 23211), (1467, 12895), (2445, 7737), (2579, 7335)]