81254880

素因数分解:

$2^5\times 3^3\times 5^1\times 7^1\times {\mathrm{2687}}^1$

素因数の和:2718

約数の個数: 192

約数和(自身を含む): 325140480

約数和(自身を除く): 243885600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 360, 378, 420, 432, 480, 504, 540, 560, 630, 672, 720, 756, 840, 864, 945, 1008, 1080, 1120, 1260, 1440, 1512, 1680, 1890, 2016, 2160, 2520, 2687, 3024, 3360, 3780, 4320, 5040, 5374, 6048, 7560, 8061, 10080, 10748, 13435, 15120, 16122, 18809, 21496, 24183, 26870, 30240, 32244, 37618, 40305, 42992, 48366, 53740, 56427, 64488, 72549, 75236, 80610, 85984, 94045, 96732, 107480, 112854, 120915, 128976, 145098, 150472, 161220, 169281, 188090, 193464, 214960, 225708, 241830, 257952, 282135, 290196, 300944, 322440, 338562, 362745, 376180, 386928, 429920, 451416, 483660, 507843, 564270, 580392, 601888, 644880, 677124, 725490, 752360, 773856, 846405, 902832, 967320, 1015686, 1128540, 1160784, 1289760, 1354248, 1450980, 1504720, 1692810, 1805664, 1934640, 2031372, 2257080, 2321568, 2539215, 2708496, 2901960, 3009440, 3385620, 3869280, 4062744, 4514160, 5078430, 5416992, 5803920, 6771240, 8125488, 9028320, 10156860, 11607840, 13542480, 16250976, 20313720, 27084960, 40627440, 81254880]

約数ペア:

[(1, 81254880), (2, 40627440), (3, 27084960), (4, 20313720), (5, 16250976), (6, 13542480), (7, 11607840), (8, 10156860), (9, 9028320), (10, 8125488), (12, 6771240), (14, 5803920), (15, 5416992), (16, 5078430), (18, 4514160), (20, 4062744), (21, 3869280), (24, 3385620), (27, 3009440), (28, 2901960), (30, 2708496), (32, 2539215), (35, 2321568), (36, 2257080), (40, 2031372), (42, 1934640), (45, 1805664), (48, 1692810), (54, 1504720), (56, 1450980), (60, 1354248), (63, 1289760), (70, 1160784), (72, 1128540), (80, 1015686), (84, 967320), (90, 902832), (96, 846405), (105, 773856), (108, 752360), (112, 725490), (120, 677124), (126, 644880), (135, 601888), (140, 580392), (144, 564270), (160, 507843), (168, 483660), (180, 451416), (189, 429920), (210, 386928), (216, 376180), (224, 362745), (240, 338562), (252, 322440), (270, 300944), (280, 290196), (288, 282135), (315, 257952), (336, 241830), (360, 225708), (378, 214960), (420, 193464), (432, 188090), (480, 169281), (504, 161220), (540, 150472), (560, 145098), (630, 128976), (672, 120915), (720, 112854), (756, 107480), (840, 96732), (864, 94045), (945, 85984), (1008, 80610), (1080, 75236), (1120, 72549), (1260, 64488), (1440, 56427), (1512, 53740), (1680, 48366), (1890, 42992), (2016, 40305), (2160, 37618), (2520, 32244), (2687, 30240), (3024, 26870), (3360, 24183), (3780, 21496), (4320, 18809), (5040, 16122), (5374, 15120), (6048, 13435), (7560, 10748), (8061, 10080)]