12689780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{5821}}^1$

素因数の和:5939

約数の個数: 24

約数和(自身を含む): 26897640

約数和(自身を除く): 14207860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 5821, 11642, 23284, 29105, 58210, 116420, 634489, 1268978, 2537956, 3172445, 6344890, 12689780]

約数ペア:

[(1, 12689780), (2, 6344890), (4, 3172445), (5, 2537956), (10, 1268978), (20, 634489), (109, 116420), (218, 58210), (436, 29105), (545, 23284), (1090, 11642), (2180, 5821)]