21612800

素因数分解:

$2^8\times 5^2\times {\mathrm{11}}^1\times {\mathrm{307}}^1$

素因数の和:344

約数の個数: 108

約数和(自身を含む): 58548336

約数和(自身を除く): 36935536

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 128, 160, 176, 200, 220, 256, 275, 307, 320, 352, 400, 440, 550, 614, 640, 704, 800, 880, 1100, 1228, 1280, 1408, 1535, 1600, 1760, 2200, 2456, 2816, 3070, 3200, 3377, 3520, 4400, 4912, 6140, 6400, 6754, 7040, 7675, 8800, 9824, 12280, 13508, 14080, 15350, 16885, 17600, 19648, 24560, 27016, 30700, 33770, 35200, 39296, 49120, 54032, 61400, 67540, 70400, 78592, 84425, 98240, 108064, 122800, 135080, 168850, 196480, 216128, 245600, 270160, 337700, 392960, 432256, 491200, 540320, 675400, 864512, 982400, 1080640, 1350800, 1964800, 2161280, 2701600, 4322560, 5403200, 10806400, 21612800]

約数ペア:

[(1, 21612800), (2, 10806400), (4, 5403200), (5, 4322560), (8, 2701600), (10, 2161280), (11, 1964800), (16, 1350800), (20, 1080640), (22, 982400), (25, 864512), (32, 675400), (40, 540320), (44, 491200), (50, 432256), (55, 392960), (64, 337700), (80, 270160), (88, 245600), (100, 216128), (110, 196480), (128, 168850), (160, 135080), (176, 122800), (200, 108064), (220, 98240), (256, 84425), (275, 78592), (307, 70400), (320, 67540), (352, 61400), (400, 54032), (440, 49120), (550, 39296), (614, 35200), (640, 33770), (704, 30700), (800, 27016), (880, 24560), (1100, 19648), (1228, 17600), (1280, 16885), (1408, 15350), (1535, 14080), (1600, 13508), (1760, 12280), (2200, 9824), (2456, 8800), (2816, 7675), (3070, 7040), (3200, 6754), (3377, 6400), (3520, 6140), (4400, 4912)]