209972020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{108233}}^1$

素因数の和:108339

約数の個数: 24

約数和(自身を含む): 445491144

約数和(自身を除く): 235519124

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 108233, 216466, 432932, 541165, 1082330, 2164660, 10498601, 20997202, 41994404, 52493005, 104986010, 209972020]

約数ペア:

[(1, 209972020), (2, 104986010), (4, 52493005), (5, 41994404), (10, 20997202), (20, 10498601), (97, 2164660), (194, 1082330), (388, 541165), (485, 432932), (970, 216466), (1940, 108233)]