28638155

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{557}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 42747264

約数和(自身を除く): 14109109

約数列:

[1, 5, 7, 13, 35, 65, 91, 113, 455, 557, 565, 791, 1469, 2785, 3899, 3955, 7241, 7345, 10283, 19495, 36205, 50687, 51415, 62941, 253435, 314705, 440587, 818233, 2202935, 4091165, 5727631, 28638155]

約数ペア:

[(1, 28638155), (5, 5727631), (7, 4091165), (13, 2202935), (35, 818233), (65, 440587), (91, 314705), (113, 253435), (455, 62941), (557, 51415), (565, 50687), (791, 36205), (1469, 19495), (2785, 10283), (3899, 7345), (3955, 7241)]