661557455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{128833}}^1$

素因数の和:128930

約数の個数: 16

約数和(自身を含む): 865764480

約数和(自身を除く): 204207025

約数列:

[1, 5, 13, 65, 79, 395, 1027, 5135, 128833, 644165, 1674829, 8374145, 10177807, 50889035, 132311491, 661557455]

約数ペア:

[(1, 661557455), (5, 132311491), (13, 50889035), (65, 10177807), (79, 8374145), (395, 1674829), (1027, 644165), (5135, 128833)]