15860720

素因数分解:

$2^4\times 5^1\times {\mathrm{198259}}^1$

素因数の和:198272

約数の個数: 20

約数和(自身を含む): 36876360

約数和(自身を除く): 21015640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198259, 396518, 793036, 991295, 1586072, 1982590, 3172144, 3965180, 7930360, 15860720]

約数ペア:

[(1, 15860720), (2, 7930360), (4, 3965180), (5, 3172144), (8, 1982590), (10, 1586072), (16, 991295), (20, 793036), (40, 396518), (80, 198259)]