21452200

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 63612000

約数和(自身を除く): 42159800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 49, 50, 55, 56, 70, 77, 88, 98, 100, 110, 140, 154, 175, 196, 199, 200, 220, 245, 275, 280, 308, 350, 385, 392, 398, 440, 490, 539, 550, 616, 700, 770, 796, 980, 995, 1078, 1100, 1225, 1393, 1400, 1540, 1592, 1925, 1960, 1990, 2156, 2189, 2200, 2450, 2695, 2786, 3080, 3850, 3980, 4312, 4378, 4900, 4975, 5390, 5572, 6965, 7700, 7960, 8756, 9751, 9800, 9950, 10780, 10945, 11144, 13475, 13930, 15323, 15400, 17512, 19502, 19900, 21560, 21890, 26950, 27860, 30646, 34825, 39004, 39800, 43780, 48755, 53900, 54725, 55720, 61292, 69650, 76615, 78008, 87560, 97510, 107261, 107800, 109450, 122584, 139300, 153230, 195020, 214522, 218900, 243775, 278600, 306460, 383075, 390040, 429044, 437800, 487550, 536305, 612920, 766150, 858088, 975100, 1072610, 1532300, 1950200, 2145220, 2681525, 3064600, 4290440, 5363050, 10726100, 21452200]

約数ペア:

[(1, 21452200), (2, 10726100), (4, 5363050), (5, 4290440), (7, 3064600), (8, 2681525), (10, 2145220), (11, 1950200), (14, 1532300), (20, 1072610), (22, 975100), (25, 858088), (28, 766150), (35, 612920), (40, 536305), (44, 487550), (49, 437800), (50, 429044), (55, 390040), (56, 383075), (70, 306460), (77, 278600), (88, 243775), (98, 218900), (100, 214522), (110, 195020), (140, 153230), (154, 139300), (175, 122584), (196, 109450), (199, 107800), (200, 107261), (220, 97510), (245, 87560), (275, 78008), (280, 76615), (308, 69650), (350, 61292), (385, 55720), (392, 54725), (398, 53900), (440, 48755), (490, 43780), (539, 39800), (550, 39004), (616, 34825), (700, 30646), (770, 27860), (796, 26950), (980, 21890), (995, 21560), (1078, 19900), (1100, 19502), (1225, 17512), (1393, 15400), (1400, 15323), (1540, 13930), (1592, 13475), (1925, 11144), (1960, 10945), (1990, 10780), (2156, 9950), (2189, 9800), (2200, 9751), (2450, 8756), (2695, 7960), (2786, 7700), (3080, 6965), (3850, 5572), (3980, 5390), (4312, 4975), (4378, 4900)]