17980720

素因数分解:

$2^4\times 5^1\times {\mathrm{224759}}^1$

素因数の和:224772

約数の個数: 20

約数和(自身を含む): 41805360

約数和(自身を除く): 23824640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 224759, 449518, 899036, 1123795, 1798072, 2247590, 3596144, 4495180, 8990360, 17980720]

約数ペア:

[(1, 17980720), (2, 8990360), (4, 4495180), (5, 3596144), (8, 2247590), (10, 1798072), (16, 1123795), (20, 899036), (40, 449518), (80, 224759)]