2016400

素因数分解:

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

素因数の和:160

約数の個数: 45

約数和(自身を含む): 4913593

約数和(自身を除く): 2897193

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 284, 355, 400, 568, 710, 1136, 1420, 1775, 2840, 3550, 5041, 5680, 7100, 10082, 14200, 20164, 25205, 28400, 40328, 50410, 80656, 100820, 126025, 201640, 252050, 403280, 504100, 1008200, 2016400]

約数ペア:

[(1, 2016400), (2, 1008200), (4, 504100), (5, 403280), (8, 252050), (10, 201640), (16, 126025), (20, 100820), (25, 80656), (40, 50410), (50, 40328), (71, 28400), (80, 25205), (100, 20164), (142, 14200), (200, 10082), (284, 7100), (355, 5680), (400, 5041), (568, 3550), (710, 2840), (1136, 1775)]