27920880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:208

約数の個数: 240

約数和(自身を含む): 106972320

約数和(自身を除く): 79051440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 36, 38, 39, 40, 45, 48, 52, 57, 60, 65, 72, 76, 78, 80, 90, 95, 104, 114, 117, 120, 130, 144, 152, 156, 157, 171, 180, 190, 195, 208, 228, 234, 240, 247, 260, 285, 304, 312, 314, 342, 360, 380, 390, 456, 468, 471, 494, 520, 570, 585, 624, 628, 684, 720, 741, 760, 780, 785, 855, 912, 936, 942, 988, 1040, 1140, 1170, 1235, 1256, 1368, 1413, 1482, 1520, 1560, 1570, 1710, 1872, 1884, 1976, 2041, 2223, 2280, 2340, 2355, 2470, 2512, 2736, 2826, 2964, 2983, 3120, 3140, 3420, 3705, 3768, 3952, 4082, 4446, 4560, 4680, 4710, 4940, 5652, 5928, 5966, 6123, 6280, 6840, 7065, 7410, 7536, 8164, 8892, 8949, 9360, 9420, 9880, 10205, 11115, 11304, 11856, 11932, 12246, 12560, 13680, 14130, 14820, 14915, 16328, 17784, 17898, 18369, 18840, 19760, 20410, 22230, 22608, 23864, 24492, 26847, 28260, 29640, 29830, 30615, 32656, 35568, 35796, 36738, 37680, 38779, 40820, 44460, 44745, 47728, 48984, 53694, 56520, 59280, 59660, 61230, 71592, 73476, 77558, 81640, 88920, 89490, 91845, 97968, 107388, 113040, 116337, 119320, 122460, 134235, 143184, 146952, 155116, 163280, 177840, 178980, 183690, 193895, 214776, 232674, 238640, 244920, 268470, 293904, 310232, 349011, 357960, 367380, 387790, 429552, 465348, 489840, 536940, 581685, 620464, 698022, 715920, 734760, 775580, 930696, 1073880, 1163370, 1396044, 1469520, 1551160, 1745055, 1861392, 2147760, 2326740, 2792088, 3102320, 3490110, 4653480, 5584176, 6980220, 9306960, 13960440, 27920880]

約数ペア:

[(1, 27920880), (2, 13960440), (3, 9306960), (4, 6980220), (5, 5584176), (6, 4653480), (8, 3490110), (9, 3102320), (10, 2792088), (12, 2326740), (13, 2147760), (15, 1861392), (16, 1745055), (18, 1551160), (19, 1469520), (20, 1396044), (24, 1163370), (26, 1073880), (30, 930696), (36, 775580), (38, 734760), (39, 715920), (40, 698022), (45, 620464), (48, 581685), (52, 536940), (57, 489840), (60, 465348), (65, 429552), (72, 387790), (76, 367380), (78, 357960), (80, 349011), (90, 310232), (95, 293904), (104, 268470), (114, 244920), (117, 238640), (120, 232674), (130, 214776), (144, 193895), (152, 183690), (156, 178980), (157, 177840), (171, 163280), (180, 155116), (190, 146952), (195, 143184), (208, 134235), (228, 122460), (234, 119320), (240, 116337), (247, 113040), (260, 107388), (285, 97968), (304, 91845), (312, 89490), (314, 88920), (342, 81640), (360, 77558), (380, 73476), (390, 71592), (456, 61230), (468, 59660), (471, 59280), (494, 56520), (520, 53694), (570, 48984), (585, 47728), (624, 44745), (628, 44460), (684, 40820), (720, 38779), (741, 37680), (760, 36738), (780, 35796), (785, 35568), (855, 32656), (912, 30615), (936, 29830), (942, 29640), (988, 28260), (1040, 26847), (1140, 24492), (1170, 23864), (1235, 22608), (1256, 22230), (1368, 20410), (1413, 19760), (1482, 18840), (1520, 18369), (1560, 17898), (1570, 17784), (1710, 16328), (1872, 14915), (1884, 14820), (1976, 14130), (2041, 13680), (2223, 12560), (2280, 12246), (2340, 11932), (2355, 11856), (2470, 11304), (2512, 11115), (2736, 10205), (2826, 9880), (2964, 9420), (2983, 9360), (3120, 8949), (3140, 8892), (3420, 8164), (3705, 7536), (3768, 7410), (3952, 7065), (4082, 6840), (4446, 6280), (4560, 6123), (4680, 5966), (4710, 5928), (4940, 5652)]