20090380

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2179}}^1$

素因数の和:2649

約数の個数: 24

約数和(自身を含む): 42300720

約数和(自身を除く): 22210340

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2179, 2305, 4358, 4610, 8716, 9220, 10895, 21790, 43580, 1004519, 2009038, 4018076, 5022595, 10045190, 20090380]

約数ペア:

[(1, 20090380), (2, 10045190), (4, 5022595), (5, 4018076), (10, 2009038), (20, 1004519), (461, 43580), (922, 21790), (1844, 10895), (2179, 9220), (2305, 8716), (4358, 4610)]