81960880

素因数分解:

$2^4\times 5^1\times {\mathrm{1024511}}^1$

素因数の和:1024524

約数の個数: 20

約数和(自身を含む): 190559232

約数和(自身を除く): 108598352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1024511, 2049022, 4098044, 5122555, 8196088, 10245110, 16392176, 20490220, 40980440, 81960880]

約数ペア:

[(1, 81960880), (2, 40980440), (4, 20490220), (5, 16392176), (8, 10245110), (10, 8196088), (16, 5122555), (20, 4098044), (40, 2049022), (80, 1024511)]