40420540

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{2003}}^1$

素因数の和:3021

約数の個数: 24

約数和(自身を含む): 85009680

約数和(自身を除く): 44589140

約数列:

[1, 2, 4, 5, 10, 20, 1009, 2003, 2018, 4006, 4036, 5045, 8012, 10015, 10090, 20030, 20180, 40060, 2021027, 4042054, 8084108, 10105135, 20210270, 40420540]

約数ペア:

[(1, 40420540), (2, 20210270), (4, 10105135), (5, 8084108), (10, 4042054), (20, 2021027), (1009, 40060), (2003, 20180), (2018, 20030), (4006, 10090), (4036, 10015), (5045, 8012)]