78878880

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:105

約数の個数: 288

約数和(自身を含む): 300283200

約数和(自身を除く): 221404320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 31, 32, 36, 38, 40, 45, 48, 54, 57, 60, 62, 72, 76, 80, 90, 93, 95, 96, 108, 114, 120, 124, 135, 144, 152, 155, 160, 171, 180, 186, 190, 216, 228, 240, 248, 270, 279, 285, 288, 304, 310, 342, 360, 372, 380, 432, 456, 465, 480, 496, 513, 540, 558, 570, 589, 608, 620, 684, 720, 744, 760, 837, 855, 864, 912, 930, 961, 992, 1026, 1080, 1116, 1140, 1178, 1240, 1368, 1395, 1440, 1488, 1520, 1674, 1710, 1767, 1824, 1860, 1922, 2052, 2160, 2232, 2280, 2356, 2480, 2565, 2736, 2790, 2883, 2945, 2976, 3040, 3348, 3420, 3534, 3720, 3844, 4104, 4185, 4320, 4464, 4560, 4712, 4805, 4960, 5130, 5301, 5472, 5580, 5766, 5890, 6696, 6840, 7068, 7440, 7688, 8208, 8370, 8649, 8835, 8928, 9120, 9424, 9610, 10260, 10602, 11160, 11532, 11780, 13392, 13680, 14136, 14415, 14880, 15376, 15903, 16416, 16740, 17298, 17670, 18259, 18848, 19220, 20520, 21204, 22320, 23064, 23560, 25947, 26505, 26784, 27360, 28272, 28830, 30752, 31806, 33480, 34596, 35340, 36518, 38440, 41040, 42408, 43245, 44640, 46128, 47120, 51894, 53010, 54777, 56544, 57660, 63612, 66960, 69192, 70680, 73036, 76880, 79515, 82080, 84816, 86490, 91295, 92256, 94240, 103788, 106020, 109554, 115320, 127224, 129735, 133920, 138384, 141360, 146072, 153760, 159030, 164331, 169632, 172980, 182590, 207576, 212040, 219108, 230640, 254448, 259470, 273885, 276768, 282720, 292144, 318060, 328662, 345960, 365180, 415152, 424080, 438216, 461280, 492993, 508896, 518940, 547770, 584288, 636120, 657324, 691920, 730360, 821655, 830304, 848160, 876432, 985986, 1037880, 1095540, 1272240, 1314648, 1383840, 1460720, 1643310, 1752864, 1971972, 2075760, 2191080, 2464965, 2544480, 2629296, 2921440, 3286620, 3943944, 4151520, 4382160, 4929930, 5258592, 6573240, 7887888, 8764320, 9859860, 13146480, 15775776, 19719720, 26292960, 39439440, 78878880]

約数ペア:

[(1, 78878880), (2, 39439440), (3, 26292960), (4, 19719720), (5, 15775776), (6, 13146480), (8, 9859860), (9, 8764320), (10, 7887888), (12, 6573240), (15, 5258592), (16, 4929930), (18, 4382160), (19, 4151520), (20, 3943944), (24, 3286620), (27, 2921440), (30, 2629296), (31, 2544480), (32, 2464965), (36, 2191080), (38, 2075760), (40, 1971972), (45, 1752864), (48, 1643310), (54, 1460720), (57, 1383840), (60, 1314648), (62, 1272240), (72, 1095540), (76, 1037880), (80, 985986), (90, 876432), (93, 848160), (95, 830304), (96, 821655), (108, 730360), (114, 691920), (120, 657324), (124, 636120), (135, 584288), (144, 547770), (152, 518940), (155, 508896), (160, 492993), (171, 461280), (180, 438216), (186, 424080), (190, 415152), (216, 365180), (228, 345960), (240, 328662), (248, 318060), (270, 292144), (279, 282720), (285, 276768), (288, 273885), (304, 259470), (310, 254448), (342, 230640), (360, 219108), (372, 212040), (380, 207576), (432, 182590), (456, 172980), (465, 169632), (480, 164331), (496, 159030), (513, 153760), (540, 146072), (558, 141360), (570, 138384), (589, 133920), (608, 129735), (620, 127224), (684, 115320), (720, 109554), (744, 106020), (760, 103788), (837, 94240), (855, 92256), (864, 91295), (912, 86490), (930, 84816), (961, 82080), (992, 79515), (1026, 76880), (1080, 73036), (1116, 70680), (1140, 69192), (1178, 66960), (1240, 63612), (1368, 57660), (1395, 56544), (1440, 54777), (1488, 53010), (1520, 51894), (1674, 47120), (1710, 46128), (1767, 44640), (1824, 43245), (1860, 42408), (1922, 41040), (2052, 38440), (2160, 36518), (2232, 35340), (2280, 34596), (2356, 33480), (2480, 31806), (2565, 30752), (2736, 28830), (2790, 28272), (2883, 27360), (2945, 26784), (2976, 26505), (3040, 25947), (3348, 23560), (3420, 23064), (3534, 22320), (3720, 21204), (3844, 20520), (4104, 19220), (4185, 18848), (4320, 18259), (4464, 17670), (4560, 17298), (4712, 16740), (4805, 16416), (4960, 15903), (5130, 15376), (5301, 14880), (5472, 14415), (5580, 14136), (5766, 13680), (5890, 13392), (6696, 11780), (6840, 11532), (7068, 11160), (7440, 10602), (7688, 10260), (8208, 9610), (8370, 9424), (8649, 9120), (8835, 8928)]