18663760

素因数分解:

$2^4\times 5^1\times {\mathrm{233297}}^1$

素因数の和:233310

約数の個数: 20

約数和(自身を含む): 43393428

約数和(自身を除く): 24729668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233297, 466594, 933188, 1166485, 1866376, 2332970, 3732752, 4665940, 9331880, 18663760]

約数ペア:

[(1, 18663760), (2, 9331880), (4, 4665940), (5, 3732752), (8, 2332970), (10, 1866376), (16, 1166485), (20, 933188), (40, 466594), (80, 233297)]