18781790

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17231}}^1$

素因数の和:17347

約数の個数: 16

約数和(自身を含む): 34119360

約数和(自身を除く): 15337570

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 17231, 34462, 86155, 172310, 1878179, 3756358, 9390895, 18781790]

約数ペア:

[(1, 18781790), (2, 9390895), (5, 3756358), (10, 1878179), (109, 172310), (218, 86155), (545, 34462), (1090, 17231)]