403280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^2$

素因数の和:155

約数の個数: 30

約数和(自身を含む): 951018

約数和(自身を除く): 547738

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5041, 5680, 10082, 20164, 25205, 40328, 50410, 80656, 100820, 201640, 403280]

約数ペア:

[(1, 403280), (2, 201640), (4, 100820), (5, 80656), (8, 50410), (10, 40328), (16, 25205), (20, 20164), (40, 10082), (71, 5680), (80, 5041), (142, 2840), (284, 1420), (355, 1136), (568, 710)]