18459020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22511}}^1$

素因数の和:22561

約数の個数: 24

約数和(自身を含む): 39711168

約数和(自身を除く): 21252148

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22511, 45022, 90044, 112555, 225110, 450220, 922951, 1845902, 3691804, 4614755, 9229510, 18459020]

約数ペア:

[(1, 18459020), (2, 9229510), (4, 4614755), (5, 3691804), (10, 1845902), (20, 922951), (41, 450220), (82, 225110), (164, 112555), (205, 90044), (410, 45022), (820, 22511)]