200517620

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{15641}}^1$

素因数の和:16291

約数の個数: 24

約数和(自身を含む): 421770888

約数和(自身を除く): 221253268

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 15641, 31282, 62564, 78205, 156410, 312820, 10025881, 20051762, 40103524, 50129405, 100258810, 200517620]

約数ペア:

[(1, 200517620), (2, 100258810), (4, 50129405), (5, 40103524), (10, 20051762), (20, 10025881), (641, 312820), (1282, 156410), (2564, 78205), (3205, 62564), (6410, 31282), (12820, 15641)]