20164420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23447}}^1$

素因数の和:23499

約数の個数: 24

約数和(自身を含む): 43331904

約数和(自身を除く): 23167484

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23447, 46894, 93788, 117235, 234470, 468940, 1008221, 2016442, 4032884, 5041105, 10082210, 20164420]

約数ペア:

[(1, 20164420), (2, 10082210), (4, 5041105), (5, 4032884), (10, 2016442), (20, 1008221), (43, 468940), (86, 234470), (172, 117235), (215, 93788), (430, 46894), (860, 23447)]