7891989

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1451}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 12580128

約数和(自身を除く): 4688139

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1451, 1813, 4353, 5439, 10157, 30471, 53687, 71099, 161061, 213297, 375809, 1127427, 2630663, 7891989]

約数ペア:

[(1, 7891989), (3, 2630663), (7, 1127427), (21, 375809), (37, 213297), (49, 161061), (111, 71099), (147, 53687), (259, 30471), (777, 10157), (1451, 5439), (1813, 4353)]