80040490

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{12109}}^1$

素因数の和:12777

約数の個数: 16

約数和(自身を含む): 144302760

約数和(自身を除く): 64262270

約数列:

[1, 2, 5, 10, 661, 1322, 3305, 6610, 12109, 24218, 60545, 121090, 8004049, 16008098, 40020245, 80040490]

約数ペア:

[(1, 80040490), (2, 40020245), (5, 16008098), (10, 8004049), (661, 121090), (1322, 60545), (3305, 24218), (6610, 12109)]