201800890

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{102437}}^1$

素因数の和:102641

約数の個数: 16

約数和(自身を含む): 365089032

約数和(自身を除く): 163288142

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 102437, 204874, 512185, 1024370, 20180089, 40360178, 100900445, 201800890]

約数ペア:

[(1, 201800890), (2, 100900445), (5, 40360178), (10, 20180089), (197, 1024370), (394, 512185), (985, 204874), (1970, 102437)]