80720080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 160

約数和(自身を含む): 232485120

約数和(自身を除く): 151765040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 61, 68, 70, 80, 85, 112, 119, 122, 136, 139, 140, 170, 238, 244, 272, 278, 280, 305, 340, 427, 476, 488, 556, 560, 595, 610, 680, 695, 854, 952, 973, 976, 1037, 1112, 1190, 1220, 1360, 1390, 1708, 1904, 1946, 2074, 2135, 2224, 2363, 2380, 2440, 2780, 3416, 3892, 4148, 4270, 4726, 4760, 4865, 4880, 5185, 5560, 6832, 7259, 7784, 8296, 8479, 8540, 9452, 9520, 9730, 10370, 11120, 11815, 14518, 15568, 16541, 16592, 16958, 17080, 18904, 19460, 20740, 23630, 29036, 33082, 33916, 34160, 36295, 37808, 38920, 41480, 42395, 47260, 58072, 59353, 66164, 67832, 72590, 77840, 82705, 82960, 84790, 94520, 116144, 118706, 132328, 135664, 144143, 145180, 165410, 169580, 189040, 237412, 264656, 288286, 290360, 296765, 330820, 339160, 474824, 576572, 580720, 593530, 661640, 678320, 720715, 949648, 1009001, 1153144, 1187060, 1323280, 1441430, 2018002, 2306288, 2374120, 2882860, 4036004, 4748240, 5045005, 5765720, 8072008, 10090010, 11531440, 16144016, 20180020, 40360040, 80720080]

約数ペア:

[(1, 80720080), (2, 40360040), (4, 20180020), (5, 16144016), (7, 11531440), (8, 10090010), (10, 8072008), (14, 5765720), (16, 5045005), (17, 4748240), (20, 4036004), (28, 2882860), (34, 2374120), (35, 2306288), (40, 2018002), (56, 1441430), (61, 1323280), (68, 1187060), (70, 1153144), (80, 1009001), (85, 949648), (112, 720715), (119, 678320), (122, 661640), (136, 593530), (139, 580720), (140, 576572), (170, 474824), (238, 339160), (244, 330820), (272, 296765), (278, 290360), (280, 288286), (305, 264656), (340, 237412), (427, 189040), (476, 169580), (488, 165410), (556, 145180), (560, 144143), (595, 135664), (610, 132328), (680, 118706), (695, 116144), (854, 94520), (952, 84790), (973, 82960), (976, 82705), (1037, 77840), (1112, 72590), (1190, 67832), (1220, 66164), (1360, 59353), (1390, 58072), (1708, 47260), (1904, 42395), (1946, 41480), (2074, 38920), (2135, 37808), (2224, 36295), (2363, 34160), (2380, 33916), (2440, 33082), (2780, 29036), (3416, 23630), (3892, 20740), (4148, 19460), (4270, 18904), (4726, 17080), (4760, 16958), (4865, 16592), (4880, 16541), (5185, 15568), (5560, 14518), (6832, 11815), (7259, 11120), (7784, 10370), (8296, 9730), (8479, 9520), (8540, 9452)]