891620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 1894200

約数和(自身を除く): 1002580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 409, 436, 545, 818, 1090, 1636, 2045, 2180, 4090, 8180, 44581, 89162, 178324, 222905, 445810, 891620]

約数ペア:

[(1, 891620), (2, 445810), (4, 222905), (5, 178324), (10, 89162), (20, 44581), (109, 8180), (218, 4090), (409, 2180), (436, 2045), (545, 1636), (818, 1090)]