21273100

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1069}}^1$

素因数の和:1282

約数の個数: 36

約数和(自身を含む): 46438000

約数和(自身を除く): 25164900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1069, 1990, 2138, 3980, 4276, 4975, 5345, 9950, 10690, 19900, 21380, 26725, 53450, 106900, 212731, 425462, 850924, 1063655, 2127310, 4254620, 5318275, 10636550, 21273100]

約数ペア:

[(1, 21273100), (2, 10636550), (4, 5318275), (5, 4254620), (10, 2127310), (20, 1063655), (25, 850924), (50, 425462), (100, 212731), (199, 106900), (398, 53450), (796, 26725), (995, 21380), (1069, 19900), (1990, 10690), (2138, 9950), (3980, 5345), (4276, 4975)]