220454420

素因数分解:

$2^2\times 5^1\times {\mathrm{1399}}^1\times {\mathrm{7879}}^1$

素因数の和:9287

約数の個数: 24

約数和(自身を含む): 463344000

約数和(自身を除く): 242889580

約数列:

[1, 2, 4, 5, 10, 20, 1399, 2798, 5596, 6995, 7879, 13990, 15758, 27980, 31516, 39395, 78790, 157580, 11022721, 22045442, 44090884, 55113605, 110227210, 220454420]

約数ペア:

[(1, 220454420), (2, 110227210), (4, 55113605), (5, 44090884), (10, 22045442), (20, 11022721), (1399, 157580), (2798, 78790), (5596, 39395), (6995, 31516), (7879, 27980), (13990, 15758)]