20382020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21683}}^1$

素因数の和:21739

約数の個数: 24

約数和(自身を含む): 43714944

約数和(自身を除く): 23332924

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21683, 43366, 86732, 108415, 216830, 433660, 1019101, 2038202, 4076404, 5095505, 10191010, 20382020]

約数ペア:

[(1, 20382020), (2, 10191010), (4, 5095505), (5, 4076404), (10, 2038202), (20, 1019101), (47, 433660), (94, 216830), (188, 108415), (235, 86732), (470, 43366), (940, 21683)]