18090940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129221}}^1$

素因数の和:129237

約数の個数: 24

約数和(自身を含む): 43418592

約数和(自身を除く): 25327652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129221, 258442, 516884, 646105, 904547, 1292210, 1809094, 2584420, 3618188, 4522735, 9045470, 18090940]

約数ペア:

[(1, 18090940), (2, 9045470), (4, 4522735), (5, 3618188), (7, 2584420), (10, 1809094), (14, 1292210), (20, 904547), (28, 646105), (35, 516884), (70, 258442), (140, 129221)]