264400

素因数分解:

$2^4\times 5^2\times {\mathrm{661}}^1$

素因数の和:679

約数の個数: 30

約数和(自身を含む): 636182

約数和(自身を除く): 371782

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 661, 1322, 2644, 3305, 5288, 6610, 10576, 13220, 16525, 26440, 33050, 52880, 66100, 132200, 264400]

約数ペア:

[(1, 264400), (2, 132200), (4, 66100), (5, 52880), (8, 33050), (10, 26440), (16, 16525), (20, 13220), (25, 10576), (40, 6610), (50, 5288), (80, 3305), (100, 2644), (200, 1322), (400, 661)]