21838580

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11257}}^1$

素因数の和:11363

約数の個数: 24

約数和(自身を含む): 46337928

約数和(自身を除く): 24499348

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11257, 22514, 45028, 56285, 112570, 225140, 1091929, 2183858, 4367716, 5459645, 10919290, 21838580]

約数ペア:

[(1, 21838580), (2, 10919290), (4, 5459645), (5, 4367716), (10, 2183858), (20, 1091929), (97, 225140), (194, 112570), (388, 56285), (485, 45028), (970, 22514), (1940, 11257)]