21254908

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{937}}^1$

素因数の和:1101

約数の個数: 24

約数和(自身を含む): 38292912

約数和(自身を除く): 17038004

約数列:

[1, 2, 4, 53, 106, 107, 212, 214, 428, 937, 1874, 3748, 5671, 11342, 22684, 49661, 99322, 100259, 198644, 200518, 401036, 5313727, 10627454, 21254908]

約数ペア:

[(1, 21254908), (2, 10627454), (4, 5313727), (53, 401036), (106, 200518), (107, 198644), (212, 100259), (214, 99322), (428, 49661), (937, 22684), (1874, 11342), (3748, 5671)]