20775280

素因数分解:

$2^4\times 5^1\times {\mathrm{259691}}^1$

素因数の和:259704

約数の個数: 20

約数和(自身を含む): 48302712

約数和(自身を除く): 27527432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259691, 519382, 1038764, 1298455, 2077528, 2596910, 4155056, 5193820, 10387640, 20775280]

約数ペア:

[(1, 20775280), (2, 10387640), (4, 5193820), (5, 4155056), (8, 2596910), (10, 2077528), (16, 1298455), (20, 1038764), (40, 519382), (80, 259691)]