19986985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5003}}^1$

素因数の和:5072

約数の個数: 16

約数和(自身を含む): 25940736

約数和(自身を除く): 5953751

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5003, 25015, 85051, 235141, 425255, 1175705, 3997397, 19986985]

約数ペア:

[(1, 19986985), (5, 3997397), (17, 1175705), (47, 425255), (85, 235141), (235, 85051), (799, 25015), (3995, 5003)]