18580720

素因数分解:

$2^4\times 5^1\times {\mathrm{232259}}^1$

素因数の和:232272

約数の個数: 20

約数和(自身を含む): 43200360

約数和(自身を除く): 24619640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 232259, 464518, 929036, 1161295, 1858072, 2322590, 3716144, 4645180, 9290360, 18580720]

約数ペア:

[(1, 18580720), (2, 9290360), (4, 4645180), (5, 3716144), (8, 2322590), (10, 1858072), (16, 1161295), (20, 929036), (40, 464518), (80, 232259)]