20556700

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1033}}^1$

素因数の和:1246

約数の個数: 36

約数和(自身を含む): 44875600

約数和(自身を除く): 24318900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1033, 1990, 2066, 3980, 4132, 4975, 5165, 9950, 10330, 19900, 20660, 25825, 51650, 103300, 205567, 411134, 822268, 1027835, 2055670, 4111340, 5139175, 10278350, 20556700]

約数ペア:

[(1, 20556700), (2, 10278350), (4, 5139175), (5, 4111340), (10, 2055670), (20, 1027835), (25, 822268), (50, 411134), (100, 205567), (199, 103300), (398, 51650), (796, 25825), (995, 20660), (1033, 19900), (1990, 10330), (2066, 9950), (3980, 5165), (4132, 4975)]