81655920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 240

約数和(自身を含む): 297123840

約数和(自身を除く): 215467920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 47, 48, 57, 60, 72, 76, 80, 90, 94, 95, 114, 120, 127, 141, 144, 152, 171, 180, 188, 190, 228, 235, 240, 254, 282, 285, 304, 342, 360, 376, 380, 381, 423, 456, 470, 508, 564, 570, 635, 684, 705, 720, 752, 760, 762, 846, 855, 893, 912, 940, 1016, 1128, 1140, 1143, 1270, 1368, 1410, 1520, 1524, 1692, 1710, 1786, 1880, 1905, 2032, 2115, 2256, 2280, 2286, 2413, 2540, 2679, 2736, 2820, 3048, 3384, 3420, 3572, 3760, 3810, 4230, 4465, 4560, 4572, 4826, 5080, 5358, 5640, 5715, 5969, 6096, 6768, 6840, 7144, 7239, 7620, 8037, 8460, 8930, 9144, 9652, 10160, 10716, 11280, 11430, 11938, 12065, 13395, 13680, 14288, 14478, 15240, 16074, 16920, 17860, 17907, 18288, 19304, 21432, 21717, 22860, 23876, 24130, 26790, 28956, 29845, 30480, 32148, 33840, 35720, 35814, 36195, 38608, 40185, 42864, 43434, 45720, 47752, 48260, 53580, 53721, 57912, 59690, 64296, 71440, 71628, 72390, 80370, 86868, 89535, 91440, 95504, 96520, 107160, 107442, 108585, 113411, 115824, 119380, 128592, 143256, 144780, 160740, 173736, 179070, 193040, 214320, 214884, 217170, 226822, 238760, 268605, 286512, 289560, 321480, 340233, 347472, 358140, 429768, 434340, 453644, 477520, 537210, 567055, 579120, 642960, 680466, 716280, 859536, 868680, 907288, 1020699, 1074420, 1134110, 1360932, 1432560, 1701165, 1737360, 1814576, 2041398, 2148840, 2268220, 2721864, 3402330, 4082796, 4297680, 4536440, 5103495, 5443728, 6804660, 8165592, 9072880, 10206990, 13609320, 16331184, 20413980, 27218640, 40827960, 81655920]

約数ペア:

[(1, 81655920), (2, 40827960), (3, 27218640), (4, 20413980), (5, 16331184), (6, 13609320), (8, 10206990), (9, 9072880), (10, 8165592), (12, 6804660), (15, 5443728), (16, 5103495), (18, 4536440), (19, 4297680), (20, 4082796), (24, 3402330), (30, 2721864), (36, 2268220), (38, 2148840), (40, 2041398), (45, 1814576), (47, 1737360), (48, 1701165), (57, 1432560), (60, 1360932), (72, 1134110), (76, 1074420), (80, 1020699), (90, 907288), (94, 868680), (95, 859536), (114, 716280), (120, 680466), (127, 642960), (141, 579120), (144, 567055), (152, 537210), (171, 477520), (180, 453644), (188, 434340), (190, 429768), (228, 358140), (235, 347472), (240, 340233), (254, 321480), (282, 289560), (285, 286512), (304, 268605), (342, 238760), (360, 226822), (376, 217170), (380, 214884), (381, 214320), (423, 193040), (456, 179070), (470, 173736), (508, 160740), (564, 144780), (570, 143256), (635, 128592), (684, 119380), (705, 115824), (720, 113411), (752, 108585), (760, 107442), (762, 107160), (846, 96520), (855, 95504), (893, 91440), (912, 89535), (940, 86868), (1016, 80370), (1128, 72390), (1140, 71628), (1143, 71440), (1270, 64296), (1368, 59690), (1410, 57912), (1520, 53721), (1524, 53580), (1692, 48260), (1710, 47752), (1786, 45720), (1880, 43434), (1905, 42864), (2032, 40185), (2115, 38608), (2256, 36195), (2280, 35814), (2286, 35720), (2413, 33840), (2540, 32148), (2679, 30480), (2736, 29845), (2820, 28956), (3048, 26790), (3384, 24130), (3420, 23876), (3572, 22860), (3760, 21717), (3810, 21432), (4230, 19304), (4465, 18288), (4560, 17907), (4572, 17860), (4826, 16920), (5080, 16074), (5358, 15240), (5640, 14478), (5715, 14288), (5969, 13680), (6096, 13395), (6768, 12065), (6840, 11938), (7144, 11430), (7239, 11280), (7620, 10716), (8037, 10160), (8460, 9652), (8930, 9144)]