21627520

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{719}}^1$

素因数の和:785

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31249280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 719, 752, 940, 1438, 1504, 1880, 2876, 3008, 3595, 3760, 5752, 6016, 7190, 7520, 11504, 14380, 15040, 23008, 28760, 30080, 33793, 46016, 57520, 67586, 92032, 115040, 135172, 168965, 230080, 270344, 337930, 460160, 540688, 675860, 1081376, 1351720, 2162752, 2703440, 4325504, 5406880, 10813760, 21627520]

約数ペア:

[(1, 21627520), (2, 10813760), (4, 5406880), (5, 4325504), (8, 2703440), (10, 2162752), (16, 1351720), (20, 1081376), (32, 675860), (40, 540688), (47, 460160), (64, 337930), (80, 270344), (94, 230080), (128, 168965), (160, 135172), (188, 115040), (235, 92032), (320, 67586), (376, 57520), (470, 46016), (640, 33793), (719, 30080), (752, 28760), (940, 23008), (1438, 15040), (1504, 14380), (1880, 11504), (2876, 7520), (3008, 7190), (3595, 6016), (3760, 5752)]