21287588

素因数分解:

$2^2\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1123}}^1$

素因数の和:1811

約数の個数: 24

約数和(自身を含む): 42676032

約数和(自身を除く): 21388444

約数列:

[1, 2, 4, 7, 14, 28, 677, 1123, 1354, 2246, 2708, 4492, 4739, 7861, 9478, 15722, 18956, 31444, 760271, 1520542, 3041084, 5321897, 10643794, 21287588]

約数ペア:

[(1, 21287588), (2, 10643794), (4, 5321897), (7, 3041084), (14, 1520542), (28, 760271), (677, 31444), (1123, 18956), (1354, 15722), (2246, 9478), (2708, 7861), (4492, 4739)]