21203280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^2\times {\mathrm{601}}^1$

素因数の和:634

約数の個数: 180

約数和(自身を含む): 82971252

約数和(自身を除く): 61767972

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 112, 120, 126, 140, 144, 147, 168, 180, 196, 210, 240, 245, 252, 280, 294, 315, 336, 360, 392, 420, 441, 490, 504, 560, 588, 601, 630, 720, 735, 784, 840, 882, 980, 1008, 1176, 1202, 1260, 1470, 1680, 1764, 1803, 1960, 2205, 2352, 2404, 2520, 2940, 3005, 3528, 3606, 3920, 4207, 4410, 4808, 5040, 5409, 5880, 6010, 7056, 7212, 8414, 8820, 9015, 9616, 10818, 11760, 12020, 12621, 14424, 16828, 17640, 18030, 21035, 21636, 24040, 25242, 27045, 28848, 29449, 33656, 35280, 36060, 37863, 42070, 43272, 48080, 50484, 54090, 58898, 63105, 67312, 72120, 75726, 84140, 86544, 88347, 100968, 108180, 117796, 126210, 144240, 147245, 151452, 168280, 176694, 189315, 201936, 216360, 235592, 252420, 265041, 294490, 302904, 336560, 353388, 378630, 432720, 441735, 471184, 504840, 530082, 588980, 605808, 706776, 757260, 883470, 1009680, 1060164, 1177960, 1325205, 1413552, 1514520, 1766940, 2120328, 2355920, 2650410, 3029040, 3533880, 4240656, 5300820, 7067760, 10601640, 21203280]

約数ペア:

[(1, 21203280), (2, 10601640), (3, 7067760), (4, 5300820), (5, 4240656), (6, 3533880), (7, 3029040), (8, 2650410), (9, 2355920), (10, 2120328), (12, 1766940), (14, 1514520), (15, 1413552), (16, 1325205), (18, 1177960), (20, 1060164), (21, 1009680), (24, 883470), (28, 757260), (30, 706776), (35, 605808), (36, 588980), (40, 530082), (42, 504840), (45, 471184), (48, 441735), (49, 432720), (56, 378630), (60, 353388), (63, 336560), (70, 302904), (72, 294490), (80, 265041), (84, 252420), (90, 235592), (98, 216360), (105, 201936), (112, 189315), (120, 176694), (126, 168280), (140, 151452), (144, 147245), (147, 144240), (168, 126210), (180, 117796), (196, 108180), (210, 100968), (240, 88347), (245, 86544), (252, 84140), (280, 75726), (294, 72120), (315, 67312), (336, 63105), (360, 58898), (392, 54090), (420, 50484), (441, 48080), (490, 43272), (504, 42070), (560, 37863), (588, 36060), (601, 35280), (630, 33656), (720, 29449), (735, 28848), (784, 27045), (840, 25242), (882, 24040), (980, 21636), (1008, 21035), (1176, 18030), (1202, 17640), (1260, 16828), (1470, 14424), (1680, 12621), (1764, 12020), (1803, 11760), (1960, 10818), (2205, 9616), (2352, 9015), (2404, 8820), (2520, 8414), (2940, 7212), (3005, 7056), (3528, 6010), (3606, 5880), (3920, 5409), (4207, 5040), (4410, 4808)]