18380720

素因数分解:

$2^4\times 5^1\times {\mathrm{229759}}^1$

素因数の和:229772

約数の個数: 20

約数和(自身を含む): 42735360

約数和(自身を除く): 24354640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229759, 459518, 919036, 1148795, 1838072, 2297590, 3676144, 4595180, 9190360, 18380720]

約数ペア:

[(1, 18380720), (2, 9190360), (4, 4595180), (5, 3676144), (8, 2297590), (10, 1838072), (16, 1148795), (20, 919036), (40, 459518), (80, 229759)]