321502720

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{233}}^1$

素因数の和:281

約数の個数: 240

約数和(自身を含む): 982423728

約数和(自身を除く): 660921008

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 64, 70, 77, 80, 88, 98, 110, 112, 128, 140, 154, 160, 176, 196, 220, 224, 233, 245, 256, 280, 308, 320, 352, 385, 392, 440, 448, 466, 490, 512, 539, 560, 616, 640, 704, 770, 784, 880, 896, 932, 980, 1078, 1120, 1165, 1232, 1280, 1408, 1540, 1568, 1631, 1760, 1792, 1864, 1960, 2156, 2240, 2330, 2464, 2560, 2563, 2695, 2816, 3080, 3136, 3262, 3520, 3584, 3728, 3920, 4312, 4480, 4660, 4928, 5126, 5390, 5632, 6160, 6272, 6524, 7040, 7456, 7840, 8155, 8624, 8960, 9320, 9856, 10252, 10780, 11417, 12320, 12544, 12815, 13048, 14080, 14912, 15680, 16310, 17248, 17920, 17941, 18640, 19712, 20504, 21560, 22834, 24640, 25088, 25630, 26096, 28160, 29824, 31360, 32620, 34496, 35882, 37280, 39424, 41008, 43120, 45668, 49280, 51260, 52192, 57085, 59648, 62720, 65240, 68992, 71764, 74560, 82016, 86240, 89705, 91336, 98560, 102520, 104384, 114170, 119296, 125440, 125587, 130480, 137984, 143528, 149120, 164032, 172480, 179410, 182672, 197120, 205040, 208768, 228340, 251174, 260960, 275968, 287056, 298240, 328064, 344960, 358820, 365344, 410080, 417536, 456680, 502348, 521920, 574112, 596480, 627935, 656128, 689920, 717640, 730688, 820160, 835072, 913360, 1004696, 1043840, 1148224, 1255870, 1312256, 1379840, 1435280, 1461376, 1640320, 1826720, 2009392, 2087680, 2296448, 2511740, 2870560, 2922752, 3280640, 3653440, 4018784, 4175360, 4592896, 5023480, 5741120, 5845504, 6561280, 7306880, 8037568, 9185792, 10046960, 11482240, 14613760, 16075136, 20093920, 22964480, 29227520, 32150272, 40187840, 45928960, 64300544, 80375680, 160751360, 321502720]

約数ペア:

[(1, 321502720), (2, 160751360), (4, 80375680), (5, 64300544), (7, 45928960), (8, 40187840), (10, 32150272), (11, 29227520), (14, 22964480), (16, 20093920), (20, 16075136), (22, 14613760), (28, 11482240), (32, 10046960), (35, 9185792), (40, 8037568), (44, 7306880), (49, 6561280), (55, 5845504), (56, 5741120), (64, 5023480), (70, 4592896), (77, 4175360), (80, 4018784), (88, 3653440), (98, 3280640), (110, 2922752), (112, 2870560), (128, 2511740), (140, 2296448), (154, 2087680), (160, 2009392), (176, 1826720), (196, 1640320), (220, 1461376), (224, 1435280), (233, 1379840), (245, 1312256), (256, 1255870), (280, 1148224), (308, 1043840), (320, 1004696), (352, 913360), (385, 835072), (392, 820160), (440, 730688), (448, 717640), (466, 689920), (490, 656128), (512, 627935), (539, 596480), (560, 574112), (616, 521920), (640, 502348), (704, 456680), (770, 417536), (784, 410080), (880, 365344), (896, 358820), (932, 344960), (980, 328064), (1078, 298240), (1120, 287056), (1165, 275968), (1232, 260960), (1280, 251174), (1408, 228340), (1540, 208768), (1568, 205040), (1631, 197120), (1760, 182672), (1792, 179410), (1864, 172480), (1960, 164032), (2156, 149120), (2240, 143528), (2330, 137984), (2464, 130480), (2560, 125587), (2563, 125440), (2695, 119296), (2816, 114170), (3080, 104384), (3136, 102520), (3262, 98560), (3520, 91336), (3584, 89705), (3728, 86240), (3920, 82016), (4312, 74560), (4480, 71764), (4660, 68992), (4928, 65240), (5126, 62720), (5390, 59648), (5632, 57085), (6160, 52192), (6272, 51260), (6524, 49280), (7040, 45668), (7456, 43120), (7840, 41008), (8155, 39424), (8624, 37280), (8960, 35882), (9320, 34496), (9856, 32620), (10252, 31360), (10780, 29824), (11417, 28160), (12320, 26096), (12544, 25630), (12815, 25088), (13048, 24640), (14080, 22834), (14912, 21560), (15680, 20504), (16310, 19712), (17248, 18640), (17920, 17941)]