221036780

素因数分解:

$2^2\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{8641}}^1$

素因数の和:9929

約数の個数: 24

約数和(自身を含む): 464593920

約数和(自身を除く): 243557140

約数列:

[1, 2, 4, 5, 10, 20, 1279, 2558, 5116, 6395, 8641, 12790, 17282, 25580, 34564, 43205, 86410, 172820, 11051839, 22103678, 44207356, 55259195, 110518390, 221036780]

約数ペア:

[(1, 221036780), (2, 110518390), (4, 55259195), (5, 44207356), (10, 22103678), (20, 11051839), (1279, 172820), (2558, 86410), (5116, 43205), (6395, 34564), (8641, 25580), (12790, 17282)]