12960980

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2689}}^1$

素因数の和:2939

約数の個数: 24

約数和(自身を含む): 27341160

約数和(自身を除く): 14380180

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 2689, 4820, 5378, 10756, 13445, 26890, 53780, 648049, 1296098, 2592196, 3240245, 6480490, 12960980]

約数ペア:

[(1, 12960980), (2, 6480490), (4, 3240245), (5, 2592196), (10, 1296098), (20, 648049), (241, 53780), (482, 26890), (964, 13445), (1205, 10756), (2410, 5378), (2689, 4820)]