20012140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9907}}^1$

素因数の和:10017

約数の個数: 24

約数和(自身を含む): 42445872

約数和(自身を除く): 22433732

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9907, 19814, 39628, 49535, 99070, 198140, 1000607, 2001214, 4002428, 5003035, 10006070, 20012140]

約数ペア:

[(1, 20012140), (2, 10006070), (4, 5003035), (5, 4002428), (10, 2001214), (20, 1000607), (101, 198140), (202, 99070), (404, 49535), (505, 39628), (1010, 19814), (2020, 9907)]