1280497040

素因数分解:

$2^4\times 5^1\times {\mathrm{16006213}}^1$

素因数の和:16006226

約数の個数: 20

約数和(自身を含む): 2977155804

約数和(自身を除く): 1696658764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16006213, 32012426, 64024852, 80031065, 128049704, 160062130, 256099408, 320124260, 640248520, 1280497040]

約数ペア:

[(1, 1280497040), (2, 640248520), (4, 320124260), (5, 256099408), (8, 160062130), (10, 128049704), (16, 80031065), (20, 64024852), (40, 32012426), (80, 16006213)]