12402020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{5689}}^1$

素因数の和:5807

約数の個数: 24

約数和(自身を含む): 26287800

約数和(自身を除く): 13885780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 5689, 11378, 22756, 28445, 56890, 113780, 620101, 1240202, 2480404, 3100505, 6201010, 12402020]

約数ペア:

[(1, 12402020), (2, 6201010), (4, 3100505), (5, 2480404), (10, 1240202), (20, 620101), (109, 113780), (218, 56890), (436, 28445), (545, 22756), (1090, 11378), (2180, 5689)]