865049840

素因数分解:

$2^4\times 5^1\times {\mathrm{10813123}}^1$

素因数の和:10813136

約数の個数: 20

約数和(自身を含む): 2011241064

約数和(自身を除く): 1146191224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10813123, 21626246, 43252492, 54065615, 86504984, 108131230, 173009968, 216262460, 432524920, 865049840]

約数ペア:

[(1, 865049840), (2, 432524920), (4, 216262460), (5, 173009968), (8, 108131230), (10, 86504984), (16, 54065615), (20, 43252492), (40, 21626246), (80, 10813123)]