257742155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{7243}}^1$

素因数の和:7906

約数の個数: 16

約数和(自身を含む): 337976064

約数和(自身を除く): 80233909

約数列:

[1, 5, 11, 55, 647, 3235, 7117, 7243, 35585, 36215, 79673, 398365, 4686221, 23431105, 51548431, 257742155]

約数ペア:

[(1, 257742155), (5, 51548431), (11, 23431105), (55, 4686221), (647, 398365), (3235, 79673), (7117, 36215), (7243, 35585)]