89189009

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1077

約数の個数: 32

約数和(自身を含む): 117325824

約数和(自身を除く): 28136815

約数列:

[1, 7, 13, 23, 43, 91, 161, 299, 301, 559, 989, 991, 2093, 3913, 6923, 6937, 12857, 12883, 22793, 42613, 89999, 90181, 159551, 296309, 298291, 553969, 980099, 2074163, 3877783, 6860693, 12741287, 89189009]

約数ペア:

[(1, 89189009), (7, 12741287), (13, 6860693), (23, 3877783), (43, 2074163), (91, 980099), (161, 553969), (299, 298291), (301, 296309), (559, 159551), (989, 90181), (991, 89999), (2093, 42613), (3913, 22793), (6923, 12883), (6937, 12857)]