257103730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1977721}}^1$

素因数の和:1977741

約数の個数: 16

約数和(自身を含む): 498385944

約数和(自身を除く): 241282214

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 1977721, 3955442, 9888605, 19777210, 25710373, 51420746, 128551865, 257103730]

約数ペア:

[(1, 257103730), (2, 128551865), (5, 51420746), (10, 25710373), (13, 19777210), (26, 9888605), (65, 3955442), (130, 1977721)]