77821920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^3$

素因数の和:83

約数の個数: 288

約数和(自身を含む): 307812960

約数和(自身を除く): 229991040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 17, 18, 20, 22, 24, 30, 32, 33, 34, 36, 40, 44, 45, 48, 51, 55, 60, 66, 68, 72, 80, 85, 88, 90, 96, 99, 102, 110, 120, 132, 136, 144, 153, 160, 165, 170, 176, 180, 187, 198, 204, 220, 240, 255, 264, 272, 288, 289, 306, 330, 340, 352, 360, 374, 396, 408, 440, 480, 495, 510, 528, 544, 561, 578, 612, 660, 680, 720, 748, 765, 792, 816, 867, 880, 935, 990, 1020, 1056, 1122, 1156, 1224, 1320, 1360, 1440, 1445, 1496, 1530, 1584, 1632, 1683, 1734, 1760, 1870, 1980, 2040, 2244, 2312, 2448, 2601, 2640, 2720, 2805, 2890, 2992, 3060, 3168, 3179, 3366, 3468, 3740, 3960, 4080, 4335, 4488, 4624, 4896, 4913, 5202, 5280, 5610, 5780, 5984, 6120, 6358, 6732, 6936, 7480, 7920, 8160, 8415, 8670, 8976, 9248, 9537, 9826, 10404, 11220, 11560, 12240, 12716, 13005, 13464, 13872, 14739, 14960, 15840, 15895, 16830, 17340, 17952, 19074, 19652, 20808, 22440, 23120, 24480, 24565, 25432, 26010, 26928, 27744, 28611, 29478, 29920, 31790, 33660, 34680, 38148, 39304, 41616, 44217, 44880, 46240, 47685, 49130, 50864, 52020, 53856, 54043, 57222, 58956, 63580, 67320, 69360, 73695, 76296, 78608, 83232, 88434, 89760, 95370, 98260, 101728, 104040, 108086, 114444, 117912, 127160, 134640, 138720, 143055, 147390, 152592, 157216, 162129, 176868, 190740, 196520, 208080, 216172, 221085, 228888, 235824, 254320, 269280, 270215, 286110, 294780, 305184, 324258, 353736, 381480, 393040, 416160, 432344, 442170, 457776, 471648, 486387, 508640, 540430, 572220, 589560, 648516, 707472, 762960, 786080, 810645, 864688, 884340, 915552, 972774, 1080860, 1144440, 1179120, 1297032, 1414944, 1525920, 1621290, 1729376, 1768680, 1945548, 2161720, 2288880, 2358240, 2431935, 2594064, 3242580, 3537360, 3891096, 4323440, 4577760, 4863870, 5188128, 6485160, 7074720, 7782192, 8646880, 9727740, 12970320, 15564384, 19455480, 25940640, 38910960, 77821920]

約数ペア:

[(1, 77821920), (2, 38910960), (3, 25940640), (4, 19455480), (5, 15564384), (6, 12970320), (8, 9727740), (9, 8646880), (10, 7782192), (11, 7074720), (12, 6485160), (15, 5188128), (16, 4863870), (17, 4577760), (18, 4323440), (20, 3891096), (22, 3537360), (24, 3242580), (30, 2594064), (32, 2431935), (33, 2358240), (34, 2288880), (36, 2161720), (40, 1945548), (44, 1768680), (45, 1729376), (48, 1621290), (51, 1525920), (55, 1414944), (60, 1297032), (66, 1179120), (68, 1144440), (72, 1080860), (80, 972774), (85, 915552), (88, 884340), (90, 864688), (96, 810645), (99, 786080), (102, 762960), (110, 707472), (120, 648516), (132, 589560), (136, 572220), (144, 540430), (153, 508640), (160, 486387), (165, 471648), (170, 457776), (176, 442170), (180, 432344), (187, 416160), (198, 393040), (204, 381480), (220, 353736), (240, 324258), (255, 305184), (264, 294780), (272, 286110), (288, 270215), (289, 269280), (306, 254320), (330, 235824), (340, 228888), (352, 221085), (360, 216172), (374, 208080), (396, 196520), (408, 190740), (440, 176868), (480, 162129), (495, 157216), (510, 152592), (528, 147390), (544, 143055), (561, 138720), (578, 134640), (612, 127160), (660, 117912), (680, 114444), (720, 108086), (748, 104040), (765, 101728), (792, 98260), (816, 95370), (867, 89760), (880, 88434), (935, 83232), (990, 78608), (1020, 76296), (1056, 73695), (1122, 69360), (1156, 67320), (1224, 63580), (1320, 58956), (1360, 57222), (1440, 54043), (1445, 53856), (1496, 52020), (1530, 50864), (1584, 49130), (1632, 47685), (1683, 46240), (1734, 44880), (1760, 44217), (1870, 41616), (1980, 39304), (2040, 38148), (2244, 34680), (2312, 33660), (2448, 31790), (2601, 29920), (2640, 29478), (2720, 28611), (2805, 27744), (2890, 26928), (2992, 26010), (3060, 25432), (3168, 24565), (3179, 24480), (3366, 23120), (3468, 22440), (3740, 20808), (3960, 19652), (4080, 19074), (4335, 17952), (4488, 17340), (4624, 16830), (4896, 15895), (4913, 15840), (5202, 14960), (5280, 14739), (5610, 13872), (5780, 13464), (5984, 13005), (6120, 12716), (6358, 12240), (6732, 11560), (6936, 11220), (7480, 10404), (7920, 9826), (8160, 9537), (8415, 9248), (8670, 8976)]