257866560

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{12791}}^1$

素因数の和:12821

約数の個数: 168

約数和(自身を含む): 1013740416

約数和(自身を除く): 755873856

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 5040, 6720, 10080, 12791, 20160, 25582, 38373, 51164, 63955, 76746, 89537, 102328, 115119, 127910, 153492, 179074, 191865, 204656, 230238, 255820, 268611, 306984, 358148, 383730, 409312, 447685, 460476, 511640, 537222, 575595, 613968, 716296, 767460, 805833, 818624, 895370, 920952, 1023280, 1074444, 1151190, 1227936, 1343055, 1432592, 1534920, 1611666, 1790740, 1841904, 2046560, 2148888, 2302380, 2455872, 2686110, 2865184, 3069840, 3223332, 3581480, 3683808, 4029165, 4093120, 4297776, 4604760, 5372220, 5730368, 6139680, 6446664, 7162960, 7367616, 8058330, 8595552, 9209520, 10744440, 12279360, 12893328, 14325920, 16116660, 17191104, 18419040, 21488880, 25786656, 28651840, 32233320, 36838080, 42977760, 51573312, 64466640, 85955520, 128933280, 257866560]

約数ペア:

[(1, 257866560), (2, 128933280), (3, 85955520), (4, 64466640), (5, 51573312), (6, 42977760), (7, 36838080), (8, 32233320), (9, 28651840), (10, 25786656), (12, 21488880), (14, 18419040), (15, 17191104), (16, 16116660), (18, 14325920), (20, 12893328), (21, 12279360), (24, 10744440), (28, 9209520), (30, 8595552), (32, 8058330), (35, 7367616), (36, 7162960), (40, 6446664), (42, 6139680), (45, 5730368), (48, 5372220), (56, 4604760), (60, 4297776), (63, 4093120), (64, 4029165), (70, 3683808), (72, 3581480), (80, 3223332), (84, 3069840), (90, 2865184), (96, 2686110), (105, 2455872), (112, 2302380), (120, 2148888), (126, 2046560), (140, 1841904), (144, 1790740), (160, 1611666), (168, 1534920), (180, 1432592), (192, 1343055), (210, 1227936), (224, 1151190), (240, 1074444), (252, 1023280), (280, 920952), (288, 895370), (315, 818624), (320, 805833), (336, 767460), (360, 716296), (420, 613968), (448, 575595), (480, 537222), (504, 511640), (560, 460476), (576, 447685), (630, 409312), (672, 383730), (720, 358148), (840, 306984), (960, 268611), (1008, 255820), (1120, 230238), (1260, 204656), (1344, 191865), (1440, 179074), (1680, 153492), (2016, 127910), (2240, 115119), (2520, 102328), (2880, 89537), (3360, 76746), (4032, 63955), (5040, 51164), (6720, 38373), (10080, 25582), (12791, 20160)]