257357520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{17021}}^1$

素因数の和:17050

約数の個数: 160

約数和(自身を含む): 1013149440

約数和(自身を除く): 755791920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 17021, 34042, 51063, 68084, 85105, 102126, 119147, 136168, 153189, 170210, 204252, 238294, 255315, 272336, 306378, 340420, 357441, 408504, 459567, 476588, 510630, 595735, 612756, 680840, 714882, 765945, 817008, 919134, 953176, 1021260, 1072323, 1191470, 1225512, 1361680, 1429764, 1531890, 1787205, 1838268, 1906352, 2042520, 2144646, 2297835, 2382940, 2451024, 2859528, 3063780, 3216969, 3574410, 3676536, 4085040, 4289292, 4595670, 4765880, 5361615, 5719056, 6127560, 6433938, 7148820, 7353072, 8578584, 9191340, 9531760, 10723230, 12255120, 12867876, 14297640, 16084845, 17157168, 18382680, 21446460, 25735752, 28595280, 32169690, 36765360, 42892920, 51471504, 64339380, 85785840, 128678760, 257357520]

約数ペア:

[(1, 257357520), (2, 128678760), (3, 85785840), (4, 64339380), (5, 51471504), (6, 42892920), (7, 36765360), (8, 32169690), (9, 28595280), (10, 25735752), (12, 21446460), (14, 18382680), (15, 17157168), (16, 16084845), (18, 14297640), (20, 12867876), (21, 12255120), (24, 10723230), (27, 9531760), (28, 9191340), (30, 8578584), (35, 7353072), (36, 7148820), (40, 6433938), (42, 6127560), (45, 5719056), (48, 5361615), (54, 4765880), (56, 4595670), (60, 4289292), (63, 4085040), (70, 3676536), (72, 3574410), (80, 3216969), (84, 3063780), (90, 2859528), (105, 2451024), (108, 2382940), (112, 2297835), (120, 2144646), (126, 2042520), (135, 1906352), (140, 1838268), (144, 1787205), (168, 1531890), (180, 1429764), (189, 1361680), (210, 1225512), (216, 1191470), (240, 1072323), (252, 1021260), (270, 953176), (280, 919134), (315, 817008), (336, 765945), (360, 714882), (378, 680840), (420, 612756), (432, 595735), (504, 510630), (540, 476588), (560, 459567), (630, 408504), (720, 357441), (756, 340420), (840, 306378), (945, 272336), (1008, 255315), (1080, 238294), (1260, 204252), (1512, 170210), (1680, 153189), (1890, 136168), (2160, 119147), (2520, 102126), (3024, 85105), (3780, 68084), (5040, 51063), (7560, 34042), (15120, 17021)]