2009620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1129}}^1$

素因数の和:1227

約数の個数: 24

約数和(自身を含む): 4271400

約数和(自身を除く): 2261780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1129, 1780, 2258, 4516, 5645, 11290, 22580, 100481, 200962, 401924, 502405, 1004810, 2009620]

約数ペア:

[(1, 2009620), (2, 1004810), (4, 502405), (5, 401924), (10, 200962), (20, 100481), (89, 22580), (178, 11290), (356, 5645), (445, 4516), (890, 2258), (1129, 1780)]