257286456

素因数分解:

$2^3\times 3^5\times 7^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:145

約数の個数: 288

約数和(自身を含む): 875150640

約数和(自身を除く): 617864184

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 37, 42, 49, 54, 56, 63, 72, 73, 74, 81, 84, 98, 108, 111, 126, 146, 147, 148, 162, 168, 189, 196, 216, 219, 222, 243, 252, 259, 292, 294, 296, 324, 333, 378, 392, 438, 441, 444, 486, 504, 511, 518, 567, 584, 588, 648, 657, 666, 756, 777, 876, 882, 888, 972, 999, 1022, 1036, 1134, 1176, 1314, 1323, 1332, 1512, 1533, 1554, 1701, 1752, 1764, 1813, 1944, 1971, 1998, 2044, 2072, 2268, 2331, 2628, 2646, 2664, 2701, 2997, 3066, 3108, 3402, 3528, 3577, 3626, 3942, 3969, 3996, 4088, 4536, 4599, 4662, 5256, 5292, 5402, 5439, 5913, 5994, 6132, 6216, 6804, 6993, 7154, 7252, 7884, 7938, 7992, 8103, 8991, 9198, 9324, 10584, 10731, 10804, 10878, 11826, 11907, 11988, 12264, 13608, 13797, 13986, 14308, 14504, 15768, 15876, 16206, 16317, 17739, 17982, 18396, 18648, 18907, 20979, 21462, 21608, 21756, 23652, 23814, 23976, 24309, 27594, 27972, 28616, 31752, 32193, 32412, 32634, 35478, 35964, 36792, 37814, 41391, 41958, 42924, 43512, 47304, 47628, 48618, 48951, 55188, 55944, 56721, 62937, 64386, 64824, 65268, 70956, 71928, 72927, 75628, 82782, 83916, 85848, 95256, 96579, 97236, 97902, 110376, 113442, 124173, 125874, 128772, 130536, 132349, 141912, 145854, 146853, 151256, 165564, 167832, 170163, 193158, 194472, 195804, 218781, 226884, 248346, 251748, 257544, 264698, 289737, 291708, 293706, 331128, 340326, 386316, 391608, 397047, 437562, 440559, 453768, 496692, 503496, 510489, 529396, 579474, 583416, 587412, 656343, 680652, 772632, 794094, 869211, 875124, 881118, 993384, 1020978, 1058792, 1158948, 1174824, 1191141, 1312686, 1361304, 1531467, 1588188, 1738422, 1750248, 1762236, 2041956, 2317896, 2382282, 2625372, 3062934, 3176376, 3476844, 3524472, 3573423, 4083912, 4594401, 4764564, 5250744, 6125868, 6953688, 7146846, 9188802, 9529128, 10720269, 12251736, 14293692, 18377604, 21440538, 28587384, 32160807, 36755208, 42881076, 64321614, 85762152, 128643228, 257286456]

約数ペア:

[(1, 257286456), (2, 128643228), (3, 85762152), (4, 64321614), (6, 42881076), (7, 36755208), (8, 32160807), (9, 28587384), (12, 21440538), (14, 18377604), (18, 14293692), (21, 12251736), (24, 10720269), (27, 9529128), (28, 9188802), (36, 7146846), (37, 6953688), (42, 6125868), (49, 5250744), (54, 4764564), (56, 4594401), (63, 4083912), (72, 3573423), (73, 3524472), (74, 3476844), (81, 3176376), (84, 3062934), (98, 2625372), (108, 2382282), (111, 2317896), (126, 2041956), (146, 1762236), (147, 1750248), (148, 1738422), (162, 1588188), (168, 1531467), (189, 1361304), (196, 1312686), (216, 1191141), (219, 1174824), (222, 1158948), (243, 1058792), (252, 1020978), (259, 993384), (292, 881118), (294, 875124), (296, 869211), (324, 794094), (333, 772632), (378, 680652), (392, 656343), (438, 587412), (441, 583416), (444, 579474), (486, 529396), (504, 510489), (511, 503496), (518, 496692), (567, 453768), (584, 440559), (588, 437562), (648, 397047), (657, 391608), (666, 386316), (756, 340326), (777, 331128), (876, 293706), (882, 291708), (888, 289737), (972, 264698), (999, 257544), (1022, 251748), (1036, 248346), (1134, 226884), (1176, 218781), (1314, 195804), (1323, 194472), (1332, 193158), (1512, 170163), (1533, 167832), (1554, 165564), (1701, 151256), (1752, 146853), (1764, 145854), (1813, 141912), (1944, 132349), (1971, 130536), (1998, 128772), (2044, 125874), (2072, 124173), (2268, 113442), (2331, 110376), (2628, 97902), (2646, 97236), (2664, 96579), (2701, 95256), (2997, 85848), (3066, 83916), (3108, 82782), (3402, 75628), (3528, 72927), (3577, 71928), (3626, 70956), (3942, 65268), (3969, 64824), (3996, 64386), (4088, 62937), (4536, 56721), (4599, 55944), (4662, 55188), (5256, 48951), (5292, 48618), (5402, 47628), (5439, 47304), (5913, 43512), (5994, 42924), (6132, 41958), (6216, 41391), (6804, 37814), (6993, 36792), (7154, 35964), (7252, 35478), (7884, 32634), (7938, 32412), (7992, 32193), (8103, 31752), (8991, 28616), (9198, 27972), (9324, 27594), (10584, 24309), (10731, 23976), (10804, 23814), (10878, 23652), (11826, 21756), (11907, 21608), (11988, 21462), (12264, 20979), (13608, 18907), (13797, 18648), (13986, 18396), (14308, 17982), (14504, 17739), (15768, 16317), (15876, 16206)]