217069440

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:581

約数の個数: 256

約数和(自身を含む): 817827840

約数和(自身を除く): 600758400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 64, 70, 80, 84, 93, 96, 105, 112, 120, 124, 128, 140, 155, 160, 168, 186, 192, 210, 217, 224, 240, 248, 280, 310, 320, 336, 372, 384, 420, 434, 448, 465, 480, 496, 521, 560, 620, 640, 651, 672, 744, 840, 868, 896, 930, 960, 992, 1042, 1085, 1120, 1240, 1302, 1344, 1488, 1563, 1680, 1736, 1860, 1920, 1984, 2084, 2170, 2240, 2480, 2604, 2605, 2688, 2976, 3126, 3255, 3360, 3472, 3647, 3720, 3968, 4168, 4340, 4480, 4960, 5208, 5210, 5952, 6252, 6510, 6720, 6944, 7294, 7440, 7815, 8336, 8680, 9920, 10416, 10420, 10941, 11904, 12504, 13020, 13440, 13888, 14588, 14880, 15630, 16151, 16672, 17360, 18235, 19840, 20832, 20840, 21882, 25008, 26040, 27776, 29176, 29760, 31260, 32302, 33344, 34720, 36470, 41664, 41680, 43764, 48453, 50016, 52080, 54705, 58352, 59520, 62520, 64604, 66688, 69440, 72940, 80755, 83328, 83360, 87528, 96906, 100032, 104160, 109410, 113057, 116704, 125040, 129208, 138880, 145880, 161510, 166720, 175056, 193812, 200064, 208320, 218820, 226114, 233408, 242265, 250080, 258416, 291760, 323020, 333440, 339171, 350112, 387624, 416640, 437640, 452228, 466816, 484530, 500160, 516832, 565285, 583520, 646040, 678342, 700224, 775248, 875280, 904456, 969060, 1000320, 1033664, 1130570, 1167040, 1292080, 1356684, 1400448, 1550496, 1695855, 1750560, 1808912, 1938120, 2067328, 2261140, 2334080, 2584160, 2713368, 3100992, 3391710, 3501120, 3617824, 3876240, 4522280, 5168320, 5426736, 6201984, 6783420, 7002240, 7235648, 7752480, 9044560, 10336640, 10853472, 13566840, 14471296, 15504960, 18089120, 21706944, 27133680, 31009920, 36178240, 43413888, 54267360, 72356480, 108534720, 217069440]

約数ペア:

[(1, 217069440), (2, 108534720), (3, 72356480), (4, 54267360), (5, 43413888), (6, 36178240), (7, 31009920), (8, 27133680), (10, 21706944), (12, 18089120), (14, 15504960), (15, 14471296), (16, 13566840), (20, 10853472), (21, 10336640), (24, 9044560), (28, 7752480), (30, 7235648), (31, 7002240), (32, 6783420), (35, 6201984), (40, 5426736), (42, 5168320), (48, 4522280), (56, 3876240), (60, 3617824), (62, 3501120), (64, 3391710), (70, 3100992), (80, 2713368), (84, 2584160), (93, 2334080), (96, 2261140), (105, 2067328), (112, 1938120), (120, 1808912), (124, 1750560), (128, 1695855), (140, 1550496), (155, 1400448), (160, 1356684), (168, 1292080), (186, 1167040), (192, 1130570), (210, 1033664), (217, 1000320), (224, 969060), (240, 904456), (248, 875280), (280, 775248), (310, 700224), (320, 678342), (336, 646040), (372, 583520), (384, 565285), (420, 516832), (434, 500160), (448, 484530), (465, 466816), (480, 452228), (496, 437640), (521, 416640), (560, 387624), (620, 350112), (640, 339171), (651, 333440), (672, 323020), (744, 291760), (840, 258416), (868, 250080), (896, 242265), (930, 233408), (960, 226114), (992, 218820), (1042, 208320), (1085, 200064), (1120, 193812), (1240, 175056), (1302, 166720), (1344, 161510), (1488, 145880), (1563, 138880), (1680, 129208), (1736, 125040), (1860, 116704), (1920, 113057), (1984, 109410), (2084, 104160), (2170, 100032), (2240, 96906), (2480, 87528), (2604, 83360), (2605, 83328), (2688, 80755), (2976, 72940), (3126, 69440), (3255, 66688), (3360, 64604), (3472, 62520), (3647, 59520), (3720, 58352), (3968, 54705), (4168, 52080), (4340, 50016), (4480, 48453), (4960, 43764), (5208, 41680), (5210, 41664), (5952, 36470), (6252, 34720), (6510, 33344), (6720, 32302), (6944, 31260), (7294, 29760), (7440, 29176), (7815, 27776), (8336, 26040), (8680, 25008), (9920, 21882), (10416, 20840), (10420, 20832), (10941, 19840), (11904, 18235), (12504, 17360), (13020, 16672), (13440, 16151), (13888, 15630), (14588, 14880)]