87865640

素因数分解:

$2^3\times 5^1\times {\mathrm{2196641}}^1$

素因数の和:2196652

約数の個数: 16

約数和(自身を含む): 197697780

約数和(自身を除く): 109832140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2196641, 4393282, 8786564, 10983205, 17573128, 21966410, 43932820, 87865640]

約数ペア:

[(1, 87865640), (2, 43932820), (4, 21966410), (5, 17573128), (8, 10983205), (10, 8786564), (20, 4393282), (40, 2196641)]