20906960

素因数分解:

$2^4\times 5^1\times {\mathrm{261337}}^1$

素因数の和:261350

約数の個数: 20

約数和(自身を含む): 48608868

約数和(自身を除く): 27701908

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261337, 522674, 1045348, 1306685, 2090696, 2613370, 4181392, 5226740, 10453480, 20906960]

約数ペア:

[(1, 20906960), (2, 10453480), (4, 5226740), (5, 4181392), (8, 2613370), (10, 2090696), (16, 1306685), (20, 1045348), (40, 522674), (80, 261337)]