31680880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 94993920

約数和(自身を除く): 63313040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 80, 88, 110, 112, 139, 140, 148, 154, 176, 185, 220, 259, 278, 280, 296, 308, 370, 385, 407, 440, 518, 556, 560, 592, 616, 695, 740, 770, 814, 880, 973, 1036, 1112, 1232, 1295, 1390, 1480, 1529, 1540, 1628, 1946, 2035, 2072, 2224, 2590, 2780, 2849, 2960, 3058, 3080, 3256, 3892, 4070, 4144, 4865, 5143, 5180, 5560, 5698, 6116, 6160, 6512, 7645, 7784, 8140, 9730, 10286, 10360, 10703, 11120, 11396, 12232, 14245, 15290, 15568, 16280, 19460, 20572, 20720, 21406, 22792, 24464, 25715, 28490, 30580, 32560, 36001, 38920, 41144, 42812, 45584, 51430, 53515, 56573, 56980, 61160, 72002, 77840, 82288, 85624, 102860, 107030, 113146, 113960, 122320, 144004, 171248, 180005, 205720, 214060, 226292, 227920, 282865, 288008, 360010, 396011, 411440, 428120, 452584, 565730, 576016, 720020, 792022, 856240, 905168, 1131460, 1440040, 1584044, 1980055, 2262920, 2880080, 3168088, 3960110, 4525840, 6336176, 7920220, 15840440, 31680880]

約数ペア:

[(1, 31680880), (2, 15840440), (4, 7920220), (5, 6336176), (7, 4525840), (8, 3960110), (10, 3168088), (11, 2880080), (14, 2262920), (16, 1980055), (20, 1584044), (22, 1440040), (28, 1131460), (35, 905168), (37, 856240), (40, 792022), (44, 720020), (55, 576016), (56, 565730), (70, 452584), (74, 428120), (77, 411440), (80, 396011), (88, 360010), (110, 288008), (112, 282865), (139, 227920), (140, 226292), (148, 214060), (154, 205720), (176, 180005), (185, 171248), (220, 144004), (259, 122320), (278, 113960), (280, 113146), (296, 107030), (308, 102860), (370, 85624), (385, 82288), (407, 77840), (440, 72002), (518, 61160), (556, 56980), (560, 56573), (592, 53515), (616, 51430), (695, 45584), (740, 42812), (770, 41144), (814, 38920), (880, 36001), (973, 32560), (1036, 30580), (1112, 28490), (1232, 25715), (1295, 24464), (1390, 22792), (1480, 21406), (1529, 20720), (1540, 20572), (1628, 19460), (1946, 16280), (2035, 15568), (2072, 15290), (2224, 14245), (2590, 12232), (2780, 11396), (2849, 11120), (2960, 10703), (3058, 10360), (3080, 10286), (3256, 9730), (3892, 8140), (4070, 7784), (4144, 7645), (4865, 6512), (5143, 6160), (5180, 6116), (5560, 5698)]