18558340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8513}}^1$

素因数の和:8631

約数の個数: 24

約数和(自身を含む): 39334680

約数和(自身を除く): 20776340

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8513, 17026, 34052, 42565, 85130, 170260, 927917, 1855834, 3711668, 4639585, 9279170, 18558340]

約数ペア:

[(1, 18558340), (2, 9279170), (4, 4639585), (5, 3711668), (10, 1855834), (20, 927917), (109, 170260), (218, 85130), (436, 42565), (545, 34052), (1090, 17026), (2180, 8513)]