205415840

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 192

約数和(自身を含む): 598752000

約数和(自身を除く): 393336160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 160, 190, 196, 197, 224, 245, 266, 280, 304, 343, 380, 392, 394, 490, 532, 560, 608, 665, 686, 760, 784, 788, 931, 980, 985, 1064, 1120, 1330, 1372, 1379, 1520, 1568, 1576, 1715, 1862, 1960, 1970, 2128, 2660, 2744, 2758, 3040, 3152, 3430, 3724, 3743, 3920, 3940, 4256, 4655, 5320, 5488, 5516, 6304, 6517, 6860, 6895, 7448, 7486, 7840, 7880, 9310, 9653, 10640, 10976, 11032, 13034, 13720, 13790, 14896, 14972, 15760, 18620, 18715, 19306, 21280, 22064, 26068, 26201, 27440, 27580, 29792, 29944, 31520, 32585, 37240, 37430, 38612, 44128, 48265, 52136, 52402, 54880, 55160, 59888, 65170, 67571, 74480, 74860, 77224, 96530, 104272, 104804, 110320, 119776, 130340, 131005, 135142, 148960, 149720, 154448, 183407, 193060, 208544, 209608, 220640, 260680, 262010, 270284, 299440, 308896, 337855, 366814, 386120, 419216, 521360, 524020, 540568, 598880, 675710, 733628, 772240, 838432, 917035, 1042720, 1048040, 1081136, 1283849, 1351420, 1467256, 1544480, 1834070, 2096080, 2162272, 2567698, 2702840, 2934512, 3668140, 4192160, 5135396, 5405680, 5869024, 6419245, 7336280, 10270792, 10811360, 12838490, 14672560, 20541584, 25676980, 29345120, 41083168, 51353960, 102707920, 205415840]

約数ペア:

[(1, 205415840), (2, 102707920), (4, 51353960), (5, 41083168), (7, 29345120), (8, 25676980), (10, 20541584), (14, 14672560), (16, 12838490), (19, 10811360), (20, 10270792), (28, 7336280), (32, 6419245), (35, 5869024), (38, 5405680), (40, 5135396), (49, 4192160), (56, 3668140), (70, 2934512), (76, 2702840), (80, 2567698), (95, 2162272), (98, 2096080), (112, 1834070), (133, 1544480), (140, 1467256), (152, 1351420), (160, 1283849), (190, 1081136), (196, 1048040), (197, 1042720), (224, 917035), (245, 838432), (266, 772240), (280, 733628), (304, 675710), (343, 598880), (380, 540568), (392, 524020), (394, 521360), (490, 419216), (532, 386120), (560, 366814), (608, 337855), (665, 308896), (686, 299440), (760, 270284), (784, 262010), (788, 260680), (931, 220640), (980, 209608), (985, 208544), (1064, 193060), (1120, 183407), (1330, 154448), (1372, 149720), (1379, 148960), (1520, 135142), (1568, 131005), (1576, 130340), (1715, 119776), (1862, 110320), (1960, 104804), (1970, 104272), (2128, 96530), (2660, 77224), (2744, 74860), (2758, 74480), (3040, 67571), (3152, 65170), (3430, 59888), (3724, 55160), (3743, 54880), (3920, 52402), (3940, 52136), (4256, 48265), (4655, 44128), (5320, 38612), (5488, 37430), (5516, 37240), (6304, 32585), (6517, 31520), (6860, 29944), (6895, 29792), (7448, 27580), (7486, 27440), (7840, 26201), (7880, 26068), (9310, 22064), (9653, 21280), (10640, 19306), (10976, 18715), (11032, 18620), (13034, 15760), (13720, 14972), (13790, 14896)]