64497040

素因数分解:

$2^4\times 5^1\times {\mathrm{806213}}^1$

素因数の和:806226

約数の個数: 20

約数和(自身を含む): 149955804

約数和(自身を除く): 85458764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 806213, 1612426, 3224852, 4031065, 6449704, 8062130, 12899408, 16124260, 32248520, 64497040]

約数ペア:

[(1, 64497040), (2, 32248520), (4, 16124260), (5, 12899408), (8, 8062130), (10, 6449704), (16, 4031065), (20, 3224852), (40, 1612426), (80, 806213)]