21267800

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2473}}^1$

素因数の和:2532

約数の個数: 48

約数和(自身を含む): 50618040

約数和(自身を除く): 29350240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2473, 4300, 4946, 8600, 9892, 12365, 19784, 24730, 49460, 61825, 98920, 106339, 123650, 212678, 247300, 425356, 494600, 531695, 850712, 1063390, 2126780, 2658475, 4253560, 5316950, 10633900, 21267800]

約数ペア:

[(1, 21267800), (2, 10633900), (4, 5316950), (5, 4253560), (8, 2658475), (10, 2126780), (20, 1063390), (25, 850712), (40, 531695), (43, 494600), (50, 425356), (86, 247300), (100, 212678), (172, 123650), (200, 106339), (215, 98920), (344, 61825), (430, 49460), (860, 24730), (1075, 19784), (1720, 12365), (2150, 9892), (2473, 8600), (4300, 4946)]