278978560

素因数分解:

$2^{13}\times 5^1\times 7^2\times {\mathrm{139}}^1$

素因数の和:184

約数の個数: 168

約数和(自身を含む): 784418040

約数和(自身を除く): 505439480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 139, 140, 160, 196, 224, 245, 256, 278, 280, 320, 392, 448, 490, 512, 556, 560, 640, 695, 784, 896, 973, 980, 1024, 1112, 1120, 1280, 1390, 1568, 1792, 1946, 1960, 2048, 2224, 2240, 2560, 2780, 3136, 3584, 3892, 3920, 4096, 4448, 4480, 4865, 5120, 5560, 6272, 6811, 7168, 7784, 7840, 8192, 8896, 8960, 9730, 10240, 11120, 12544, 13622, 14336, 15568, 15680, 17792, 17920, 19460, 20480, 22240, 25088, 27244, 28672, 31136, 31360, 34055, 35584, 35840, 38920, 40960, 44480, 50176, 54488, 57344, 62272, 62720, 68110, 71168, 71680, 77840, 88960, 100352, 108976, 124544, 125440, 136220, 142336, 143360, 155680, 177920, 200704, 217952, 249088, 250880, 272440, 284672, 286720, 311360, 355840, 401408, 435904, 498176, 501760, 544880, 569344, 622720, 711680, 871808, 996352, 1003520, 1089760, 1138688, 1245440, 1423360, 1743616, 1992704, 2007040, 2179520, 2490880, 2846720, 3487232, 3985408, 4359040, 4981760, 5693440, 6974464, 7970816, 8718080, 9963520, 13948928, 17436160, 19927040, 27897856, 34872320, 39854080, 55795712, 69744640, 139489280, 278978560]

約数ペア:

[(1, 278978560), (2, 139489280), (4, 69744640), (5, 55795712), (7, 39854080), (8, 34872320), (10, 27897856), (14, 19927040), (16, 17436160), (20, 13948928), (28, 9963520), (32, 8718080), (35, 7970816), (40, 6974464), (49, 5693440), (56, 4981760), (64, 4359040), (70, 3985408), (80, 3487232), (98, 2846720), (112, 2490880), (128, 2179520), (139, 2007040), (140, 1992704), (160, 1743616), (196, 1423360), (224, 1245440), (245, 1138688), (256, 1089760), (278, 1003520), (280, 996352), (320, 871808), (392, 711680), (448, 622720), (490, 569344), (512, 544880), (556, 501760), (560, 498176), (640, 435904), (695, 401408), (784, 355840), (896, 311360), (973, 286720), (980, 284672), (1024, 272440), (1112, 250880), (1120, 249088), (1280, 217952), (1390, 200704), (1568, 177920), (1792, 155680), (1946, 143360), (1960, 142336), (2048, 136220), (2224, 125440), (2240, 124544), (2560, 108976), (2780, 100352), (3136, 88960), (3584, 77840), (3892, 71680), (3920, 71168), (4096, 68110), (4448, 62720), (4480, 62272), (4865, 57344), (5120, 54488), (5560, 50176), (6272, 44480), (6811, 40960), (7168, 38920), (7784, 35840), (7840, 35584), (8192, 34055), (8896, 31360), (8960, 31136), (9730, 28672), (10240, 27244), (11120, 25088), (12544, 22240), (13622, 20480), (14336, 19460), (15568, 17920), (15680, 17792)]