257495280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{153271}}^1$

素因数の和:153294

約数の個数: 80

約数和(自身を含む): 912274944

約数和(自身を除く): 654779664

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 153271, 306542, 459813, 613084, 766355, 919626, 1072897, 1226168, 1532710, 1839252, 2145794, 2299065, 2452336, 3065420, 3218691, 3678504, 4291588, 4598130, 5364485, 6130840, 6437382, 7357008, 8583176, 9196260, 10728970, 12261680, 12874764, 16093455, 17166352, 18392520, 21457940, 25749528, 32186910, 36785040, 42915880, 51499056, 64373820, 85831760, 128747640, 257495280]

約数ペア:

[(1, 257495280), (2, 128747640), (3, 85831760), (4, 64373820), (5, 51499056), (6, 42915880), (7, 36785040), (8, 32186910), (10, 25749528), (12, 21457940), (14, 18392520), (15, 17166352), (16, 16093455), (20, 12874764), (21, 12261680), (24, 10728970), (28, 9196260), (30, 8583176), (35, 7357008), (40, 6437382), (42, 6130840), (48, 5364485), (56, 4598130), (60, 4291588), (70, 3678504), (80, 3218691), (84, 3065420), (105, 2452336), (112, 2299065), (120, 2145794), (140, 1839252), (168, 1532710), (210, 1226168), (240, 1072897), (280, 919626), (336, 766355), (420, 613084), (560, 459813), (840, 306542), (1680, 153271)]