278668320

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:643

約数の個数: 192

約数和(自身を含む): 1010693376

約数和(自身を除く): 732025056

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 197, 210, 224, 240, 280, 336, 394, 420, 421, 480, 560, 591, 672, 788, 840, 842, 985, 1120, 1182, 1263, 1379, 1576, 1680, 1684, 1970, 2105, 2364, 2526, 2758, 2947, 2955, 3152, 3360, 3368, 3940, 4137, 4210, 4728, 5052, 5516, 5894, 5910, 6304, 6315, 6736, 6895, 7880, 8274, 8420, 8841, 9456, 10104, 11032, 11788, 11820, 12630, 13472, 13790, 14735, 15760, 16548, 16840, 17682, 18912, 20208, 20685, 22064, 23576, 23640, 25260, 27580, 29470, 31520, 33096, 33680, 35364, 40416, 41370, 44128, 44205, 47152, 47280, 50520, 55160, 58940, 66192, 67360, 70728, 82740, 82937, 88410, 94304, 94560, 101040, 110320, 117880, 132384, 141456, 165480, 165874, 176820, 202080, 220640, 235760, 248811, 282912, 330960, 331748, 353640, 414685, 471520, 497622, 580559, 661920, 663496, 707280, 829370, 995244, 1161118, 1244055, 1326992, 1414560, 1658740, 1741677, 1990488, 2322236, 2488110, 2653984, 2902795, 3317480, 3483354, 3980976, 4644472, 4976220, 5805590, 6634960, 6966708, 7961952, 8708385, 9288944, 9952440, 11611180, 13269920, 13933416, 17416770, 18577888, 19904880, 23222360, 27866832, 34833540, 39809760, 46444720, 55733664, 69667080, 92889440, 139334160, 278668320]

約数ペア:

[(1, 278668320), (2, 139334160), (3, 92889440), (4, 69667080), (5, 55733664), (6, 46444720), (7, 39809760), (8, 34833540), (10, 27866832), (12, 23222360), (14, 19904880), (15, 18577888), (16, 17416770), (20, 13933416), (21, 13269920), (24, 11611180), (28, 9952440), (30, 9288944), (32, 8708385), (35, 7961952), (40, 6966708), (42, 6634960), (48, 5805590), (56, 4976220), (60, 4644472), (70, 3980976), (80, 3483354), (84, 3317480), (96, 2902795), (105, 2653984), (112, 2488110), (120, 2322236), (140, 1990488), (160, 1741677), (168, 1658740), (197, 1414560), (210, 1326992), (224, 1244055), (240, 1161118), (280, 995244), (336, 829370), (394, 707280), (420, 663496), (421, 661920), (480, 580559), (560, 497622), (591, 471520), (672, 414685), (788, 353640), (840, 331748), (842, 330960), (985, 282912), (1120, 248811), (1182, 235760), (1263, 220640), (1379, 202080), (1576, 176820), (1680, 165874), (1684, 165480), (1970, 141456), (2105, 132384), (2364, 117880), (2526, 110320), (2758, 101040), (2947, 94560), (2955, 94304), (3152, 88410), (3360, 82937), (3368, 82740), (3940, 70728), (4137, 67360), (4210, 66192), (4728, 58940), (5052, 55160), (5516, 50520), (5894, 47280), (5910, 47152), (6304, 44205), (6315, 44128), (6736, 41370), (6895, 40416), (7880, 35364), (8274, 33680), (8420, 33096), (8841, 31520), (9456, 29470), (10104, 27580), (11032, 25260), (11788, 23640), (11820, 23576), (12630, 22064), (13472, 20685), (13790, 20208), (14735, 18912), (15760, 17682), (16548, 16840)]