251164809

素因数分解:

$3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{20873}}^1$

素因数の和:21077

約数の個数: 24

約数和(自身を含む): 416812032

約数和(自身を除く): 165647223

約数列:

[1, 3, 7, 9, 21, 63, 191, 573, 1337, 1719, 4011, 12033, 20873, 62619, 146111, 187857, 438333, 1314999, 3986743, 11960229, 27907201, 35880687, 83721603, 251164809]

約数ペア:

[(1, 251164809), (3, 83721603), (7, 35880687), (9, 27907201), (21, 11960229), (63, 3986743), (191, 1314999), (573, 438333), (1337, 187857), (1719, 146111), (4011, 62619), (12033, 20873)]