2019967280

素因数分解:

$2^4\times 5^1\times {\mathrm{25249591}}^1$

素因数の和:25249604

約数の個数: 20

約数和(自身を含む): 4696424112

約数和(自身を除く): 2676456832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25249591, 50499182, 100998364, 126247955, 201996728, 252495910, 403993456, 504991820, 1009983640, 2019967280]

約数ペア:

[(1, 2019967280), (2, 1009983640), (4, 504991820), (5, 403993456), (8, 252495910), (10, 201996728), (16, 126247955), (20, 100998364), (40, 50499182), (80, 25249591)]