19961137

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 23571072

約数和(自身を除く): 3609935

約数列:

[1, 7, 41, 157, 287, 443, 1099, 3101, 6437, 18163, 45059, 69551, 127141, 486857, 2851591, 19961137]

約数ペア:

[(1, 19961137), (7, 2851591), (41, 486857), (157, 127141), (287, 69551), (443, 45059), (1099, 18163), (3101, 6437)]