258766991

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{643}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 310109184

約数和(自身を除く): 51342193

約数列:

[1, 7, 43, 49, 191, 301, 643, 1337, 2107, 4501, 8213, 9359, 27649, 31507, 57491, 122813, 193543, 402437, 859691, 1354801, 5280959, 6017837, 36966713, 258766991]

約数ペア:

[(1, 258766991), (7, 36966713), (43, 6017837), (49, 5280959), (191, 1354801), (301, 859691), (643, 402437), (1337, 193543), (2107, 122813), (4501, 57491), (8213, 31507), (9359, 27649)]