1321720960

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{307}}^1$

素因数の和:395

約数の個数: 192

約数和(自身を含む): 3743530560

約数和(自身を除く): 2421809600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 280, 307, 310, 320, 434, 448, 496, 560, 614, 620, 640, 868, 896, 961, 992, 1085, 1120, 1228, 1240, 1535, 1736, 1922, 1984, 2149, 2170, 2240, 2456, 2480, 3070, 3472, 3844, 3968, 4298, 4340, 4480, 4805, 4912, 4960, 6140, 6727, 6944, 7688, 8596, 8680, 9517, 9610, 9824, 9920, 10745, 12280, 13454, 13888, 15376, 17192, 17360, 19034, 19220, 19648, 19840, 21490, 24560, 26908, 27776, 30752, 33635, 34384, 34720, 38068, 38440, 39296, 42980, 47585, 49120, 53816, 61504, 66619, 67270, 68768, 69440, 76136, 76880, 85960, 95170, 98240, 107632, 123008, 133238, 134540, 137536, 138880, 152272, 153760, 171920, 190340, 196480, 215264, 266476, 269080, 275072, 295027, 304544, 307520, 333095, 343840, 380680, 430528, 532952, 538160, 590054, 609088, 615040, 666190, 687680, 761360, 861056, 1065904, 1076320, 1180108, 1218176, 1332380, 1375360, 1475135, 1522720, 2065189, 2131808, 2152640, 2360216, 2664760, 2950270, 3045440, 4130378, 4263616, 4305280, 4720432, 5329520, 5900540, 6090880, 8260756, 8527232, 9440864, 10325945, 10659040, 11801080, 16521512, 18881728, 20651890, 21318080, 23602160, 33043024, 37763456, 41303780, 42636160, 47204320, 66086048, 82607560, 94408640, 132172096, 165215120, 188817280, 264344192, 330430240, 660860480, 1321720960]

約数ペア:

[(1, 1321720960), (2, 660860480), (4, 330430240), (5, 264344192), (7, 188817280), (8, 165215120), (10, 132172096), (14, 94408640), (16, 82607560), (20, 66086048), (28, 47204320), (31, 42636160), (32, 41303780), (35, 37763456), (40, 33043024), (56, 23602160), (62, 21318080), (64, 20651890), (70, 18881728), (80, 16521512), (112, 11801080), (124, 10659040), (128, 10325945), (140, 9440864), (155, 8527232), (160, 8260756), (217, 6090880), (224, 5900540), (248, 5329520), (280, 4720432), (307, 4305280), (310, 4263616), (320, 4130378), (434, 3045440), (448, 2950270), (496, 2664760), (560, 2360216), (614, 2152640), (620, 2131808), (640, 2065189), (868, 1522720), (896, 1475135), (961, 1375360), (992, 1332380), (1085, 1218176), (1120, 1180108), (1228, 1076320), (1240, 1065904), (1535, 861056), (1736, 761360), (1922, 687680), (1984, 666190), (2149, 615040), (2170, 609088), (2240, 590054), (2456, 538160), (2480, 532952), (3070, 430528), (3472, 380680), (3844, 343840), (3968, 333095), (4298, 307520), (4340, 304544), (4480, 295027), (4805, 275072), (4912, 269080), (4960, 266476), (6140, 215264), (6727, 196480), (6944, 190340), (7688, 171920), (8596, 153760), (8680, 152272), (9517, 138880), (9610, 137536), (9824, 134540), (9920, 133238), (10745, 123008), (12280, 107632), (13454, 98240), (13888, 95170), (15376, 85960), (17192, 76880), (17360, 76136), (19034, 69440), (19220, 68768), (19648, 67270), (19840, 66619), (21490, 61504), (24560, 53816), (26908, 49120), (27776, 47585), (30752, 42980), (33635, 39296), (34384, 38440), (34720, 38068)]