28118209

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:325

約数の個数: 24

約数和(自身を含む): 34276608

約数和(自身を除く): 6158399

約数列:

[1, 7, 31, 49, 107, 173, 217, 749, 1211, 1519, 3317, 5243, 5363, 8477, 18511, 23219, 37541, 129577, 162533, 262787, 573841, 907039, 4016887, 28118209]

約数ペア:

[(1, 28118209), (7, 4016887), (31, 907039), (49, 573841), (107, 262787), (173, 162533), (217, 129577), (749, 37541), (1211, 23219), (1519, 18511), (3317, 8477), (5243, 5363)]