1991232089

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{9859}}^1$

素因数の和:9981

約数の個数: 32

約数和(自身を含む): 2582215680

約数和(自身を除く): 590983591

約数列:

[1, 7, 11, 43, 61, 77, 301, 427, 473, 671, 2623, 3311, 4697, 9859, 18361, 28853, 69013, 108449, 201971, 423937, 601399, 759143, 2967559, 4209793, 4663307, 6615389, 25860157, 32643149, 46307723, 181021099, 284461727, 1991232089]

約数ペア:

[(1, 1991232089), (7, 284461727), (11, 181021099), (43, 46307723), (61, 32643149), (77, 25860157), (301, 6615389), (427, 4663307), (473, 4209793), (671, 2967559), (2623, 759143), (3311, 601399), (4697, 423937), (9859, 201971), (18361, 108449), (28853, 69013)]