15991985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{4003}}^1$

素因数の和:4072

約数の個数: 16

約数和(自身を含む): 20756736

約数和(自身を除く): 4764751

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 4003, 20015, 68051, 188141, 340255, 940705, 3198397, 15991985]

約数ペア:

[(1, 15991985), (5, 3198397), (17, 940705), (47, 340255), (85, 188141), (235, 68051), (799, 20015), (3995, 4003)]