257902743

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{172973}}^1$

素因数の和:173054

約数の個数: 16

約数和(自身を含む): 398532096

約数和(自身を除く): 140629353

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 172973, 518919, 1210811, 3632433, 12281083, 36843249, 85967581, 257902743]

約数ペア:

[(1, 257902743), (3, 85967581), (7, 36843249), (21, 12281083), (71, 3632433), (213, 1210811), (497, 518919), (1491, 172973)]