278997760

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 707436576

約数和(自身を除く): 428438816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 43, 64, 74, 80, 86, 128, 137, 148, 160, 172, 185, 215, 256, 274, 296, 320, 344, 370, 430, 548, 592, 640, 685, 688, 740, 860, 1096, 1184, 1280, 1370, 1376, 1480, 1591, 1720, 2192, 2368, 2740, 2752, 2960, 3182, 3440, 4384, 4736, 5069, 5480, 5504, 5891, 5920, 6364, 6880, 7955, 8768, 9472, 10138, 10960, 11008, 11782, 11840, 12728, 13760, 15910, 17536, 20276, 21920, 23564, 23680, 25345, 25456, 27520, 29455, 31820, 35072, 40552, 43840, 47128, 47360, 50690, 50912, 55040, 58910, 63640, 81104, 87680, 94256, 101380, 101824, 117820, 127280, 162208, 175360, 188512, 202760, 203648, 217967, 235640, 254560, 324416, 377024, 405520, 407296, 435934, 471280, 509120, 648832, 754048, 811040, 871868, 942560, 1018240, 1089835, 1297664, 1508096, 1622080, 1743736, 1885120, 2036480, 2179670, 3244160, 3487472, 3770240, 4359340, 6488320, 6974944, 7540480, 8718680, 13949888, 17437360, 27899776, 34874720, 55799552, 69749440, 139498880, 278997760]

約数ペア:

[(1, 278997760), (2, 139498880), (4, 69749440), (5, 55799552), (8, 34874720), (10, 27899776), (16, 17437360), (20, 13949888), (32, 8718680), (37, 7540480), (40, 6974944), (43, 6488320), (64, 4359340), (74, 3770240), (80, 3487472), (86, 3244160), (128, 2179670), (137, 2036480), (148, 1885120), (160, 1743736), (172, 1622080), (185, 1508096), (215, 1297664), (256, 1089835), (274, 1018240), (296, 942560), (320, 871868), (344, 811040), (370, 754048), (430, 648832), (548, 509120), (592, 471280), (640, 435934), (685, 407296), (688, 405520), (740, 377024), (860, 324416), (1096, 254560), (1184, 235640), (1280, 217967), (1370, 203648), (1376, 202760), (1480, 188512), (1591, 175360), (1720, 162208), (2192, 127280), (2368, 117820), (2740, 101824), (2752, 101380), (2960, 94256), (3182, 87680), (3440, 81104), (4384, 63640), (4736, 58910), (5069, 55040), (5480, 50912), (5504, 50690), (5891, 47360), (5920, 47128), (6364, 43840), (6880, 40552), (7955, 35072), (8768, 31820), (9472, 29455), (10138, 27520), (10960, 25456), (11008, 25345), (11782, 23680), (11840, 23564), (12728, 21920), (13760, 20276), (15910, 17536)]