28819600

素因数分解:

$2^4\times 5^2\times {\mathrm{109}}^1\times {\mathrm{661}}^1$

素因数の和:788

約数の個数: 60

約数和(自身を含む): 69980020

約数和(自身を除く): 41160420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 200, 218, 400, 436, 545, 661, 872, 1090, 1322, 1744, 2180, 2644, 2725, 3305, 4360, 5288, 5450, 6610, 8720, 10576, 10900, 13220, 16525, 21800, 26440, 33050, 43600, 52880, 66100, 72049, 132200, 144098, 264400, 288196, 360245, 576392, 720490, 1152784, 1440980, 1801225, 2881960, 3602450, 5763920, 7204900, 14409800, 28819600]

約数ペア:

[(1, 28819600), (2, 14409800), (4, 7204900), (5, 5763920), (8, 3602450), (10, 2881960), (16, 1801225), (20, 1440980), (25, 1152784), (40, 720490), (50, 576392), (80, 360245), (100, 288196), (109, 264400), (200, 144098), (218, 132200), (400, 72049), (436, 66100), (545, 52880), (661, 43600), (872, 33050), (1090, 26440), (1322, 21800), (1744, 16525), (2180, 13220), (2644, 10900), (2725, 10576), (3305, 8720), (4360, 6610), (5288, 5450)]