290905640

素因数分解:

$2^3\times 5^1\times {\mathrm{7272641}}^1$

素因数の和:7272652

約数の個数: 16

約数和(自身を含む): 654537780

約数和(自身を除く): 363632140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7272641, 14545282, 29090564, 36363205, 58181128, 72726410, 145452820, 290905640]

約数ペア:

[(1, 290905640), (2, 145452820), (4, 72726410), (5, 58181128), (8, 36363205), (10, 29090564), (20, 14545282), (40, 7272641)]