20807600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4729}}^1$

素因数の和:4758

約数の個数: 60

約数和(自身を含む): 54546360

約数和(自身を除く): 33738760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4729, 9458, 18916, 23645, 37832, 47290, 52019, 75664, 94580, 104038, 118225, 189160, 208076, 236450, 260095, 378320, 416152, 472900, 520190, 832304, 945800, 1040380, 1300475, 1891600, 2080760, 2600950, 4161520, 5201900, 10403800, 20807600]

約数ペア:

[(1, 20807600), (2, 10403800), (4, 5201900), (5, 4161520), (8, 2600950), (10, 2080760), (11, 1891600), (16, 1300475), (20, 1040380), (22, 945800), (25, 832304), (40, 520190), (44, 472900), (50, 416152), (55, 378320), (80, 260095), (88, 236450), (100, 208076), (110, 189160), (176, 118225), (200, 104038), (220, 94580), (275, 75664), (400, 52019), (440, 47290), (550, 37832), (880, 23645), (1100, 18916), (2200, 9458), (4400, 4729)]