20640386

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{1201}}^1$

素因数の和:1877

約数の個数: 16

約数和(自身を含む): 33420408

約数和(自身を除く): 12780022

約数列:

[1, 2, 13, 26, 661, 1201, 1322, 2402, 8593, 15613, 17186, 31226, 793861, 1587722, 10320193, 20640386]

約数ペア:

[(1, 20640386), (2, 10320193), (13, 1587722), (26, 793861), (661, 31226), (1201, 17186), (1322, 15613), (2402, 8593)]