401065640

素因数分解:

$2^3\times 5^1\times {\mathrm{10026641}}^1$

素因数の和:10026652

約数の個数: 16

約数和(自身を含む): 902397780

約数和(自身を除く): 501332140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10026641, 20053282, 40106564, 50133205, 80213128, 100266410, 200532820, 401065640]

約数ペア:

[(1, 401065640), (2, 200532820), (4, 100266410), (5, 80213128), (8, 50133205), (10, 40106564), (20, 20053282), (40, 10026641)]