28770721

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 33854976

約数和(自身を除く): 5084255

約数列:

[1, 7, 47, 157, 329, 557, 1099, 3899, 7379, 26179, 51653, 87449, 183253, 612143, 4110103, 28770721]

約数ペア:

[(1, 28770721), (7, 4110103), (47, 612143), (157, 183253), (329, 87449), (557, 51653), (1099, 26179), (3899, 7379)]