257801880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1$

素因数の和:626

約数の個数: 256

約数和(自身を含む): 964224000

約数和(自身を除く): 706422120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 29, 30, 35, 38, 40, 42, 56, 57, 58, 60, 70, 76, 84, 87, 95, 105, 114, 116, 120, 133, 140, 145, 152, 168, 174, 190, 203, 210, 228, 232, 266, 280, 285, 290, 348, 380, 399, 406, 420, 435, 456, 532, 551, 557, 570, 580, 609, 665, 696, 760, 798, 812, 840, 870, 1015, 1064, 1102, 1114, 1140, 1160, 1218, 1330, 1596, 1624, 1653, 1671, 1740, 1995, 2030, 2204, 2228, 2280, 2436, 2660, 2755, 2785, 3045, 3192, 3306, 3342, 3480, 3857, 3899, 3990, 4060, 4408, 4456, 4872, 5320, 5510, 5570, 6090, 6612, 6684, 7714, 7798, 7980, 8120, 8265, 8355, 10583, 11020, 11140, 11571, 11697, 12180, 13224, 13368, 15428, 15596, 15960, 16153, 16530, 16710, 19285, 19495, 21166, 22040, 22280, 23142, 23394, 24360, 30856, 31192, 31749, 32306, 33060, 33420, 38570, 38990, 42332, 46284, 46788, 48459, 52915, 57855, 58485, 63498, 64612, 66120, 66840, 74081, 77140, 77980, 80765, 84664, 92568, 93576, 96918, 105830, 113071, 115710, 116970, 126996, 129224, 148162, 154280, 155960, 158745, 161530, 193836, 211660, 222243, 226142, 231420, 233940, 242295, 253992, 296324, 306907, 317490, 323060, 339213, 370405, 387672, 423320, 444486, 452284, 462840, 467880, 484590, 565355, 592648, 613814, 634980, 646120, 678426, 740810, 888972, 904568, 920721, 969180, 1111215, 1130710, 1227628, 1269960, 1356852, 1481620, 1534535, 1696065, 1777944, 1841442, 1938360, 2148349, 2222430, 2261420, 2455256, 2713704, 2963240, 3069070, 3392130, 3682884, 4296698, 4444860, 4522840, 4603605, 6138140, 6445047, 6784260, 7365768, 8593396, 8889720, 9207210, 10741745, 12276280, 12890094, 13568520, 17186792, 18414420, 21483490, 25780188, 32225235, 36828840, 42966980, 51560376, 64450470, 85933960, 128900940, 257801880]

約数ペア:

[(1, 257801880), (2, 128900940), (3, 85933960), (4, 64450470), (5, 51560376), (6, 42966980), (7, 36828840), (8, 32225235), (10, 25780188), (12, 21483490), (14, 18414420), (15, 17186792), (19, 13568520), (20, 12890094), (21, 12276280), (24, 10741745), (28, 9207210), (29, 8889720), (30, 8593396), (35, 7365768), (38, 6784260), (40, 6445047), (42, 6138140), (56, 4603605), (57, 4522840), (58, 4444860), (60, 4296698), (70, 3682884), (76, 3392130), (84, 3069070), (87, 2963240), (95, 2713704), (105, 2455256), (114, 2261420), (116, 2222430), (120, 2148349), (133, 1938360), (140, 1841442), (145, 1777944), (152, 1696065), (168, 1534535), (174, 1481620), (190, 1356852), (203, 1269960), (210, 1227628), (228, 1130710), (232, 1111215), (266, 969180), (280, 920721), (285, 904568), (290, 888972), (348, 740810), (380, 678426), (399, 646120), (406, 634980), (420, 613814), (435, 592648), (456, 565355), (532, 484590), (551, 467880), (557, 462840), (570, 452284), (580, 444486), (609, 423320), (665, 387672), (696, 370405), (760, 339213), (798, 323060), (812, 317490), (840, 306907), (870, 296324), (1015, 253992), (1064, 242295), (1102, 233940), (1114, 231420), (1140, 226142), (1160, 222243), (1218, 211660), (1330, 193836), (1596, 161530), (1624, 158745), (1653, 155960), (1671, 154280), (1740, 148162), (1995, 129224), (2030, 126996), (2204, 116970), (2228, 115710), (2280, 113071), (2436, 105830), (2660, 96918), (2755, 93576), (2785, 92568), (3045, 84664), (3192, 80765), (3306, 77980), (3342, 77140), (3480, 74081), (3857, 66840), (3899, 66120), (3990, 64612), (4060, 63498), (4408, 58485), (4456, 57855), (4872, 52915), (5320, 48459), (5510, 46788), (5570, 46284), (6090, 42332), (6612, 38990), (6684, 38570), (7714, 33420), (7798, 33060), (7980, 32306), (8120, 31749), (8265, 31192), (8355, 30856), (10583, 24360), (11020, 23394), (11140, 23142), (11571, 22280), (11697, 22040), (12180, 21166), (13224, 19495), (13368, 19285), (15428, 16710), (15596, 16530), (15960, 16153)]