201988040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{25633}}^1$

素因数の和:25841

約数の個数: 32

約数和(自身を含む): 456797880

約数和(自身を除く): 254809840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 25633, 51266, 102532, 128165, 205064, 256330, 512660, 1025320, 5049701, 10099402, 20198804, 25248505, 40397608, 50497010, 100994020, 201988040]

約数ペア:

[(1, 201988040), (2, 100994020), (4, 50497010), (5, 40397608), (8, 25248505), (10, 20198804), (20, 10099402), (40, 5049701), (197, 1025320), (394, 512660), (788, 256330), (985, 205064), (1576, 128165), (1970, 102532), (3940, 51266), (7880, 25633)]