81234120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:164

約数の個数: 256

約数和(自身を含む): 290304000

約数和(自身を除く): 209069880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 33, 38, 40, 41, 44, 55, 57, 60, 66, 76, 79, 82, 88, 95, 110, 114, 120, 123, 132, 152, 158, 164, 165, 190, 205, 209, 220, 228, 237, 246, 264, 285, 316, 328, 330, 380, 395, 410, 418, 440, 451, 456, 474, 492, 570, 615, 627, 632, 660, 760, 779, 790, 820, 836, 869, 902, 948, 984, 1045, 1140, 1185, 1230, 1254, 1320, 1353, 1501, 1558, 1580, 1640, 1672, 1738, 1804, 1896, 2090, 2255, 2280, 2337, 2370, 2460, 2508, 2607, 2706, 3002, 3116, 3135, 3160, 3239, 3476, 3608, 3895, 4180, 4345, 4503, 4510, 4674, 4740, 4920, 5016, 5214, 5412, 6004, 6232, 6270, 6478, 6765, 6952, 7505, 7790, 8360, 8569, 8690, 9006, 9020, 9348, 9480, 9717, 10428, 10824, 11685, 12008, 12540, 12956, 13035, 13530, 15010, 15580, 16195, 16511, 17138, 17380, 18012, 18040, 18696, 19434, 20856, 22515, 23370, 25080, 25707, 25912, 26070, 27060, 30020, 31160, 32390, 33022, 34276, 34760, 35629, 36024, 38868, 42845, 45030, 46740, 48585, 49533, 51414, 52140, 54120, 60040, 61541, 64780, 66044, 68552, 71258, 77736, 82555, 85690, 90060, 93480, 97170, 99066, 102828, 104280, 106887, 123082, 128535, 129560, 132088, 142516, 165110, 171380, 178145, 180120, 184623, 194340, 198132, 205656, 213774, 246164, 247665, 257070, 285032, 307705, 330220, 342760, 356290, 369246, 388680, 396264, 427548, 492328, 495330, 514140, 534435, 615410, 660440, 676951, 712580, 738492, 855096, 923115, 990660, 1028280, 1068870, 1230820, 1353902, 1425160, 1476984, 1846230, 1981320, 2030853, 2137740, 2461640, 2707804, 3384755, 3692460, 4061706, 4275480, 5415608, 6769510, 7384920, 8123412, 10154265, 13539020, 16246824, 20308530, 27078040, 40617060, 81234120]

約数ペア:

[(1, 81234120), (2, 40617060), (3, 27078040), (4, 20308530), (5, 16246824), (6, 13539020), (8, 10154265), (10, 8123412), (11, 7384920), (12, 6769510), (15, 5415608), (19, 4275480), (20, 4061706), (22, 3692460), (24, 3384755), (30, 2707804), (33, 2461640), (38, 2137740), (40, 2030853), (41, 1981320), (44, 1846230), (55, 1476984), (57, 1425160), (60, 1353902), (66, 1230820), (76, 1068870), (79, 1028280), (82, 990660), (88, 923115), (95, 855096), (110, 738492), (114, 712580), (120, 676951), (123, 660440), (132, 615410), (152, 534435), (158, 514140), (164, 495330), (165, 492328), (190, 427548), (205, 396264), (209, 388680), (220, 369246), (228, 356290), (237, 342760), (246, 330220), (264, 307705), (285, 285032), (316, 257070), (328, 247665), (330, 246164), (380, 213774), (395, 205656), (410, 198132), (418, 194340), (440, 184623), (451, 180120), (456, 178145), (474, 171380), (492, 165110), (570, 142516), (615, 132088), (627, 129560), (632, 128535), (660, 123082), (760, 106887), (779, 104280), (790, 102828), (820, 99066), (836, 97170), (869, 93480), (902, 90060), (948, 85690), (984, 82555), (1045, 77736), (1140, 71258), (1185, 68552), (1230, 66044), (1254, 64780), (1320, 61541), (1353, 60040), (1501, 54120), (1558, 52140), (1580, 51414), (1640, 49533), (1672, 48585), (1738, 46740), (1804, 45030), (1896, 42845), (2090, 38868), (2255, 36024), (2280, 35629), (2337, 34760), (2370, 34276), (2460, 33022), (2508, 32390), (2607, 31160), (2706, 30020), (3002, 27060), (3116, 26070), (3135, 25912), (3160, 25707), (3239, 25080), (3476, 23370), (3608, 22515), (3895, 20856), (4180, 19434), (4345, 18696), (4503, 18040), (4510, 18012), (4674, 17380), (4740, 17138), (4920, 16511), (5016, 16195), (5214, 15580), (5412, 15010), (6004, 13530), (6232, 13035), (6270, 12956), (6478, 12540), (6765, 12008), (6952, 11685), (7505, 10824), (7790, 10428), (8360, 9717), (8569, 9480), (8690, 9348), (9006, 9020)]