78788880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 240

約数和(自身を含む): 288825264

約数和(自身を除く): 210036384

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 41, 45, 48, 51, 60, 68, 72, 80, 82, 85, 90, 102, 120, 123, 136, 144, 153, 157, 164, 170, 180, 204, 205, 240, 246, 255, 272, 306, 314, 328, 340, 360, 369, 408, 410, 471, 492, 510, 612, 615, 628, 656, 680, 697, 720, 738, 765, 785, 816, 820, 942, 984, 1020, 1224, 1230, 1256, 1360, 1394, 1413, 1476, 1530, 1570, 1640, 1845, 1884, 1968, 2040, 2091, 2355, 2448, 2460, 2512, 2669, 2788, 2826, 2952, 3060, 3140, 3280, 3485, 3690, 3768, 4080, 4182, 4710, 4920, 5338, 5576, 5652, 5904, 6120, 6273, 6280, 6437, 6970, 7065, 7380, 7536, 8007, 8364, 9420, 9840, 10455, 10676, 11152, 11304, 12240, 12546, 12560, 12874, 13345, 13940, 14130, 14760, 16014, 16728, 18840, 19311, 20910, 21352, 22608, 24021, 25092, 25748, 26690, 27880, 28260, 29520, 31365, 32028, 32185, 33456, 37680, 38622, 40035, 41820, 42704, 48042, 50184, 51496, 53380, 55760, 56520, 57933, 62730, 64056, 64370, 77244, 80070, 83640, 96084, 96555, 100368, 102992, 106760, 109429, 113040, 115866, 120105, 125460, 128112, 128740, 154488, 160140, 167280, 192168, 193110, 213520, 218858, 231732, 240210, 250920, 257480, 289665, 308976, 320280, 328287, 384336, 386220, 437716, 463464, 480420, 501840, 514960, 547145, 579330, 640560, 656574, 772440, 875432, 926928, 960840, 984861, 1094290, 1158660, 1313148, 1544880, 1641435, 1750864, 1921680, 1969722, 2188580, 2317320, 2626296, 3282870, 3939444, 4377160, 4634640, 4924305, 5252592, 6565740, 7878888, 8754320, 9848610, 13131480, 15757776, 19697220, 26262960, 39394440, 78788880]

約数ペア:

[(1, 78788880), (2, 39394440), (3, 26262960), (4, 19697220), (5, 15757776), (6, 13131480), (8, 9848610), (9, 8754320), (10, 7878888), (12, 6565740), (15, 5252592), (16, 4924305), (17, 4634640), (18, 4377160), (20, 3939444), (24, 3282870), (30, 2626296), (34, 2317320), (36, 2188580), (40, 1969722), (41, 1921680), (45, 1750864), (48, 1641435), (51, 1544880), (60, 1313148), (68, 1158660), (72, 1094290), (80, 984861), (82, 960840), (85, 926928), (90, 875432), (102, 772440), (120, 656574), (123, 640560), (136, 579330), (144, 547145), (153, 514960), (157, 501840), (164, 480420), (170, 463464), (180, 437716), (204, 386220), (205, 384336), (240, 328287), (246, 320280), (255, 308976), (272, 289665), (306, 257480), (314, 250920), (328, 240210), (340, 231732), (360, 218858), (369, 213520), (408, 193110), (410, 192168), (471, 167280), (492, 160140), (510, 154488), (612, 128740), (615, 128112), (628, 125460), (656, 120105), (680, 115866), (697, 113040), (720, 109429), (738, 106760), (765, 102992), (785, 100368), (816, 96555), (820, 96084), (942, 83640), (984, 80070), (1020, 77244), (1224, 64370), (1230, 64056), (1256, 62730), (1360, 57933), (1394, 56520), (1413, 55760), (1476, 53380), (1530, 51496), (1570, 50184), (1640, 48042), (1845, 42704), (1884, 41820), (1968, 40035), (2040, 38622), (2091, 37680), (2355, 33456), (2448, 32185), (2460, 32028), (2512, 31365), (2669, 29520), (2788, 28260), (2826, 27880), (2952, 26690), (3060, 25748), (3140, 25092), (3280, 24021), (3485, 22608), (3690, 21352), (3768, 20910), (4080, 19311), (4182, 18840), (4710, 16728), (4920, 16014), (5338, 14760), (5576, 14130), (5652, 13940), (5904, 13345), (6120, 12874), (6273, 12560), (6280, 12546), (6437, 12240), (6970, 11304), (7065, 11152), (7380, 10676), (7536, 10455), (8007, 9840), (8364, 9420)]