18666820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9241}}^1$

素因数の和:9351

約数の個数: 24

約数和(自身を含む): 39592728

約数和(自身を除く): 20925908

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9241, 18482, 36964, 46205, 92410, 184820, 933341, 1866682, 3733364, 4666705, 9333410, 18666820]

約数ペア:

[(1, 18666820), (2, 9333410), (4, 4666705), (5, 3733364), (10, 1866682), (20, 933341), (101, 184820), (202, 92410), (404, 46205), (505, 36964), (1010, 18482), (2020, 9241)]