12031999

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^2$

素因数の和:223

約数の個数: 18

約数和(自身を含む): 14612064

約数和(自身を除く): 2580065

約数列:

[1, 7, 31, 49, 89, 217, 623, 1519, 2759, 4361, 7921, 19313, 55447, 135191, 245551, 388129, 1718857, 12031999]

約数ペア:

[(1, 12031999), (7, 1718857), (31, 388129), (49, 245551), (89, 135191), (217, 55447), (623, 19313), (1519, 7921), (2759, 4361)]