64737040

素因数分解:

$2^4\times 5^1\times {\mathrm{809213}}^1$

素因数の和:809226

約数の個数: 20

約数和(自身を含む): 150513804

約数和(自身を除く): 85776764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809213, 1618426, 3236852, 4046065, 6473704, 8092130, 12947408, 16184260, 32368520, 64737040]

約数ペア:

[(1, 64737040), (2, 32368520), (4, 16184260), (5, 12947408), (8, 8092130), (10, 6473704), (16, 4046065), (20, 3236852), (40, 1618426), (80, 809213)]