18315020

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2239}}^1$

素因数の和:2657

約数の個数: 24

約数和(自身を含む): 38572800

約数和(自身を除く): 20257780

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2239, 4090, 4478, 8180, 8956, 11195, 22390, 44780, 915751, 1831502, 3663004, 4578755, 9157510, 18315020]

約数ペア:

[(1, 18315020), (2, 9157510), (4, 4578755), (5, 3663004), (10, 1831502), (20, 915751), (409, 44780), (818, 22390), (1636, 11195), (2045, 8956), (2239, 8180), (4090, 4478)]