18042140

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2153}}^1$

素因数の和:2581

約数の個数: 24

約数和(自身を含む): 37996560

約数和(自身を除く): 19954420

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 2153, 4190, 4306, 8380, 8612, 10765, 21530, 43060, 902107, 1804214, 3608428, 4510535, 9021070, 18042140]

約数ペア:

[(1, 18042140), (2, 9021070), (4, 4510535), (5, 3608428), (10, 1804214), (20, 902107), (419, 43060), (838, 21530), (1676, 10765), (2095, 8612), (2153, 8380), (4190, 4306)]