25571320

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1811}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 57730320

約数和(自身を除く): 32159000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 1811, 2824, 3530, 3622, 7060, 7244, 9055, 14120, 14488, 18110, 36220, 72440, 639283, 1278566, 2557132, 3196415, 5114264, 6392830, 12785660, 25571320]

約数ペア:

[(1, 25571320), (2, 12785660), (4, 6392830), (5, 5114264), (8, 3196415), (10, 2557132), (20, 1278566), (40, 639283), (353, 72440), (706, 36220), (1412, 18110), (1765, 14488), (1811, 14120), (2824, 9055), (3530, 7244), (3622, 7060)]