201990985

素因数分解:

$5^1\times 7^3\times {\mathrm{117779}}^1$

素因数の和:117805

約数の個数: 16

約数和(自身を含む): 282672000

約数和(自身を除く): 80681015

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 117779, 588895, 824453, 4122265, 5771171, 28855855, 40398197, 201990985]

約数ペア:

[(1, 201990985), (5, 40398197), (7, 28855855), (35, 5771171), (49, 4122265), (245, 824453), (343, 588895), (1715, 117779)]