21066460

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10859}}^1$

素因数の和:10965

約数の個数: 24

約数和(自身を含む): 44699760

約数和(自身を除く): 23633300

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10859, 21718, 43436, 54295, 108590, 217180, 1053323, 2106646, 4213292, 5266615, 10533230, 21066460]

約数ペア:

[(1, 21066460), (2, 10533230), (4, 5266615), (5, 4213292), (10, 2106646), (20, 1053323), (97, 217180), (194, 108590), (388, 54295), (485, 43436), (970, 21718), (1940, 10859)]