21260800

素因数分解:

$2^9\times 5^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1$

素因数の和:190

約数の個数: 120

約数和(自身を含む): 57844512

約数和(自身を除く): 36583712

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, 151, 160, 176, 200, 220, 256, 275, 302, 320, 352, 400, 440, 512, 550, 604, 640, 704, 755, 800, 880, 1100, 1208, 1280, 1408, 1510, 1600, 1661, 1760, 2200, 2416, 2560, 2816, 3020, 3200, 3322, 3520, 3775, 4400, 4832, 5632, 6040, 6400, 6644, 7040, 7550, 8305, 8800, 9664, 12080, 12800, 13288, 14080, 15100, 16610, 17600, 19328, 24160, 26576, 28160, 30200, 33220, 35200, 38656, 41525, 48320, 53152, 60400, 66440, 70400, 77312, 83050, 96640, 106304, 120800, 132880, 140800, 166100, 193280, 212608, 241600, 265760, 332200, 386560, 425216, 483200, 531520, 664400, 850432, 966400, 1063040, 1328800, 1932800, 2126080, 2657600, 4252160, 5315200, 10630400, 21260800]

約数ペア:

[(1, 21260800), (2, 10630400), (4, 5315200), (5, 4252160), (8, 2657600), (10, 2126080), (11, 1932800), (16, 1328800), (20, 1063040), (22, 966400), (25, 850432), (32, 664400), (40, 531520), (44, 483200), (50, 425216), (55, 386560), (64, 332200), (80, 265760), (88, 241600), (100, 212608), (110, 193280), (128, 166100), (151, 140800), (160, 132880), (176, 120800), (200, 106304), (220, 96640), (256, 83050), (275, 77312), (302, 70400), (320, 66440), (352, 60400), (400, 53152), (440, 48320), (512, 41525), (550, 38656), (604, 35200), (640, 33220), (704, 30200), (755, 28160), (800, 26576), (880, 24160), (1100, 19328), (1208, 17600), (1280, 16610), (1408, 15100), (1510, 14080), (1600, 13288), (1661, 12800), (1760, 12080), (2200, 9664), (2416, 8800), (2560, 8305), (2816, 7550), (3020, 7040), (3200, 6644), (3322, 6400), (3520, 6040), (3775, 5632), (4400, 4832)]