81655680

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{599}}^1$

素因数の和:692

約数の個数: 128

約数和(自身を含む): 264384000

約数和(自身を除く): 182728320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 71, 80, 96, 120, 128, 142, 160, 192, 213, 240, 284, 320, 355, 384, 426, 480, 568, 599, 640, 710, 852, 960, 1065, 1136, 1198, 1420, 1704, 1797, 1920, 2130, 2272, 2396, 2840, 2995, 3408, 3594, 4260, 4544, 4792, 5680, 5990, 6816, 7188, 8520, 8985, 9088, 9584, 11360, 11980, 13632, 14376, 17040, 17970, 19168, 22720, 23960, 27264, 28752, 34080, 35940, 38336, 42529, 45440, 47920, 57504, 68160, 71880, 76672, 85058, 95840, 115008, 127587, 136320, 143760, 170116, 191680, 212645, 230016, 255174, 287520, 340232, 383360, 425290, 510348, 575040, 637935, 680464, 850580, 1020696, 1150080, 1275870, 1360928, 1701160, 2041392, 2551740, 2721856, 3402320, 4082784, 5103480, 5443712, 6804640, 8165568, 10206960, 13609280, 16331136, 20413920, 27218560, 40827840, 81655680]

約数ペア:

[(1, 81655680), (2, 40827840), (3, 27218560), (4, 20413920), (5, 16331136), (6, 13609280), (8, 10206960), (10, 8165568), (12, 6804640), (15, 5443712), (16, 5103480), (20, 4082784), (24, 3402320), (30, 2721856), (32, 2551740), (40, 2041392), (48, 1701160), (60, 1360928), (64, 1275870), (71, 1150080), (80, 1020696), (96, 850580), (120, 680464), (128, 637935), (142, 575040), (160, 510348), (192, 425290), (213, 383360), (240, 340232), (284, 287520), (320, 255174), (355, 230016), (384, 212645), (426, 191680), (480, 170116), (568, 143760), (599, 136320), (640, 127587), (710, 115008), (852, 95840), (960, 85058), (1065, 76672), (1136, 71880), (1198, 68160), (1420, 57504), (1704, 47920), (1797, 45440), (1920, 42529), (2130, 38336), (2272, 35940), (2396, 34080), (2840, 28752), (2995, 27264), (3408, 23960), (3594, 22720), (4260, 19168), (4544, 17970), (4792, 17040), (5680, 14376), (5990, 13632), (6816, 11980), (7188, 11360), (8520, 9584), (8985, 9088)]