257126520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{6247}}^1$

素因数の和:6282

約数の個数: 128

約数和(自身を含む): 899712000

約数和(自身を除く): 642585480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 490, 588, 686, 735, 840, 980, 1029, 1176, 1372, 1470, 1715, 1960, 2058, 2744, 2940, 3430, 4116, 5145, 5880, 6247, 6860, 8232, 10290, 12494, 13720, 18741, 20580, 24988, 31235, 37482, 41160, 43729, 49976, 62470, 74964, 87458, 93705, 124940, 131187, 149928, 174916, 187410, 218645, 249880, 262374, 306103, 349832, 374820, 437290, 524748, 612206, 655935, 749640, 874580, 918309, 1049496, 1224412, 1311870, 1530515, 1749160, 1836618, 2142721, 2448824, 2623740, 3061030, 3673236, 4285442, 4591545, 5247480, 6122060, 6428163, 7346472, 8570884, 9183090, 10713605, 12244120, 12856326, 17141768, 18366180, 21427210, 25712652, 32140815, 36732360, 42854420, 51425304, 64281630, 85708840, 128563260, 257126520]

約数ペア:

[(1, 257126520), (2, 128563260), (3, 85708840), (4, 64281630), (5, 51425304), (6, 42854420), (7, 36732360), (8, 32140815), (10, 25712652), (12, 21427210), (14, 18366180), (15, 17141768), (20, 12856326), (21, 12244120), (24, 10713605), (28, 9183090), (30, 8570884), (35, 7346472), (40, 6428163), (42, 6122060), (49, 5247480), (56, 4591545), (60, 4285442), (70, 3673236), (84, 3061030), (98, 2623740), (105, 2448824), (120, 2142721), (140, 1836618), (147, 1749160), (168, 1530515), (196, 1311870), (210, 1224412), (245, 1049496), (280, 918309), (294, 874580), (343, 749640), (392, 655935), (420, 612206), (490, 524748), (588, 437290), (686, 374820), (735, 349832), (840, 306103), (980, 262374), (1029, 249880), (1176, 218645), (1372, 187410), (1470, 174916), (1715, 149928), (1960, 131187), (2058, 124940), (2744, 93705), (2940, 87458), (3430, 74964), (4116, 62470), (5145, 49976), (5880, 43729), (6247, 41160), (6860, 37482), (8232, 31235), (10290, 24988), (12494, 20580), (13720, 18741)]