81608040

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 256

約数和(自身を含む): 296352000

約数和(自身を除く): 214743960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 41, 45, 54, 57, 60, 72, 76, 82, 90, 95, 97, 108, 114, 120, 123, 135, 152, 164, 171, 180, 190, 194, 205, 216, 228, 246, 270, 285, 291, 328, 342, 360, 369, 380, 388, 410, 456, 485, 492, 513, 540, 570, 582, 615, 684, 738, 760, 776, 779, 820, 855, 873, 970, 984, 1026, 1080, 1107, 1140, 1164, 1230, 1368, 1455, 1476, 1558, 1640, 1710, 1746, 1843, 1845, 1940, 2052, 2214, 2280, 2328, 2337, 2460, 2565, 2619, 2910, 2952, 3116, 3420, 3492, 3686, 3690, 3880, 3895, 3977, 4104, 4365, 4428, 4674, 4920, 5130, 5238, 5529, 5535, 5820, 6232, 6840, 6984, 7011, 7372, 7380, 7790, 7954, 8730, 8856, 9215, 9348, 10260, 10476, 11058, 11070, 11640, 11685, 11931, 13095, 14022, 14744, 14760, 15580, 15908, 16587, 17460, 18430, 18696, 19885, 20520, 20952, 21033, 22116, 22140, 23370, 23862, 26190, 27645, 28044, 31160, 31816, 33174, 34920, 35055, 35793, 36860, 39770, 42066, 44232, 44280, 46740, 47724, 49761, 52380, 55290, 56088, 59655, 66348, 70110, 71586, 73720, 75563, 79540, 82935, 84132, 93480, 95448, 99522, 104760, 105165, 107379, 110580, 119310, 132696, 140220, 143172, 151126, 159080, 165870, 168264, 178965, 199044, 210330, 214758, 221160, 226689, 238620, 248805, 280440, 286344, 302252, 331740, 357930, 377815, 398088, 420660, 429516, 453378, 477240, 497610, 536895, 604504, 663480, 680067, 715860, 755630, 841320, 859032, 906756, 995220, 1073790, 1133445, 1360134, 1431720, 1511260, 1813512, 1990440, 2040201, 2147580, 2266890, 2720268, 3022520, 3400335, 4080402, 4295160, 4533780, 5440536, 6800670, 8160804, 9067560, 10201005, 13601340, 16321608, 20402010, 27202680, 40804020, 81608040]

約数ペア:

[(1, 81608040), (2, 40804020), (3, 27202680), (4, 20402010), (5, 16321608), (6, 13601340), (8, 10201005), (9, 9067560), (10, 8160804), (12, 6800670), (15, 5440536), (18, 4533780), (19, 4295160), (20, 4080402), (24, 3400335), (27, 3022520), (30, 2720268), (36, 2266890), (38, 2147580), (40, 2040201), (41, 1990440), (45, 1813512), (54, 1511260), (57, 1431720), (60, 1360134), (72, 1133445), (76, 1073790), (82, 995220), (90, 906756), (95, 859032), (97, 841320), (108, 755630), (114, 715860), (120, 680067), (123, 663480), (135, 604504), (152, 536895), (164, 497610), (171, 477240), (180, 453378), (190, 429516), (194, 420660), (205, 398088), (216, 377815), (228, 357930), (246, 331740), (270, 302252), (285, 286344), (291, 280440), (328, 248805), (342, 238620), (360, 226689), (369, 221160), (380, 214758), (388, 210330), (410, 199044), (456, 178965), (485, 168264), (492, 165870), (513, 159080), (540, 151126), (570, 143172), (582, 140220), (615, 132696), (684, 119310), (738, 110580), (760, 107379), (776, 105165), (779, 104760), (820, 99522), (855, 95448), (873, 93480), (970, 84132), (984, 82935), (1026, 79540), (1080, 75563), (1107, 73720), (1140, 71586), (1164, 70110), (1230, 66348), (1368, 59655), (1455, 56088), (1476, 55290), (1558, 52380), (1640, 49761), (1710, 47724), (1746, 46740), (1843, 44280), (1845, 44232), (1940, 42066), (2052, 39770), (2214, 36860), (2280, 35793), (2328, 35055), (2337, 34920), (2460, 33174), (2565, 31816), (2619, 31160), (2910, 28044), (2952, 27645), (3116, 26190), (3420, 23862), (3492, 23370), (3686, 22140), (3690, 22116), (3880, 21033), (3895, 20952), (3977, 20520), (4104, 19885), (4365, 18696), (4428, 18430), (4674, 17460), (4920, 16587), (5130, 15908), (5238, 15580), (5529, 14760), (5535, 14744), (5820, 14022), (6232, 13095), (6840, 11931), (6984, 11685), (7011, 11640), (7372, 11070), (7380, 11058), (7790, 10476), (7954, 10260), (8730, 9348), (8856, 9215)]