64503280

素因数分解:

$2^4\times 5^1\times {\mathrm{806291}}^1$

素因数の和:806304

約数の個数: 20

約数和(自身を含む): 149970312

約数和(自身を除く): 85467032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 806291, 1612582, 3225164, 4031455, 6450328, 8062910, 12900656, 16125820, 32251640, 64503280]

約数ペア:

[(1, 64503280), (2, 32251640), (4, 16125820), (5, 12900656), (8, 8062910), (10, 6450328), (16, 4031455), (20, 3225164), (40, 1612582), (80, 806291)]