81121616

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123661}}^1$

素因数の和:123710

約数の個数: 20

約数和(自身を含む): 161007924

約数和(自身を除く): 79886308

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123661, 247322, 494644, 989288, 1978576, 5070101, 10140202, 20280404, 40560808, 81121616]

約数ペア:

[(1, 81121616), (2, 40560808), (4, 20280404), (8, 10140202), (16, 5070101), (41, 1978576), (82, 989288), (164, 494644), (328, 247322), (656, 123661)]