164025640

素因数分解:

$2^3\times 5^1\times {\mathrm{4100641}}^1$

素因数の和:4100652

約数の個数: 16

約数和(自身を含む): 369057780

約数和(自身を除く): 205032140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4100641, 8201282, 16402564, 20503205, 32805128, 41006410, 82012820, 164025640]

約数ペア:

[(1, 164025640), (2, 82012820), (4, 41006410), (5, 32805128), (8, 20503205), (10, 16402564), (20, 8201282), (40, 4100641)]