12816400

素因数分解:

$2^4\times 5^2\times {\mathrm{179}}^2$

素因数の和:376

約数の個数: 45

約数和(自身を含む): 30964381

約数和(自身を除く): 18147981

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 179, 200, 358, 400, 716, 895, 1432, 1790, 2864, 3580, 4475, 7160, 8950, 14320, 17900, 32041, 35800, 64082, 71600, 128164, 160205, 256328, 320410, 512656, 640820, 801025, 1281640, 1602050, 2563280, 3204100, 6408200, 12816400]

約数ペア:

[(1, 12816400), (2, 6408200), (4, 3204100), (5, 2563280), (8, 1602050), (10, 1281640), (16, 801025), (20, 640820), (25, 512656), (40, 320410), (50, 256328), (80, 160205), (100, 128164), (179, 71600), (200, 64082), (358, 35800), (400, 32041), (716, 17900), (895, 14320), (1432, 8950), (1790, 7160), (2864, 4475)]