257943

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 16

約数和(自身を含む): 400896

約数和(自身を除く): 142953

約数列:

[1, 3, 7, 21, 71, 173, 213, 497, 519, 1211, 1491, 3633, 12283, 36849, 85981, 257943]

約数ペア:

[(1, 257943), (3, 85981), (7, 36849), (21, 12283), (71, 3633), (173, 1491), (213, 1211), (497, 519)]