90487720

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2269}}^1$

素因数の和:3277

約数の個数: 32

約数和(自身を含む): 203891400

約数和(自身を除く): 113403680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2269, 3988, 4538, 4985, 7976, 9076, 9970, 11345, 18152, 19940, 22690, 39880, 45380, 90760, 2262193, 4524386, 9048772, 11310965, 18097544, 22621930, 45243860, 90487720]

約数ペア:

[(1, 90487720), (2, 45243860), (4, 22621930), (5, 18097544), (8, 11310965), (10, 9048772), (20, 4524386), (40, 2262193), (997, 90760), (1994, 45380), (2269, 39880), (3988, 22690), (4538, 19940), (4985, 18152), (7976, 11345), (9076, 9970)]