77860720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:818

約数の個数: 80

約数和(自身を含む): 208075968

約数和(自身を除く): 130215248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 257, 280, 514, 541, 560, 1028, 1082, 1285, 1799, 2056, 2164, 2570, 2705, 3598, 3787, 4112, 4328, 5140, 5410, 7196, 7574, 8656, 8995, 10280, 10820, 14392, 15148, 17990, 18935, 20560, 21640, 28784, 30296, 35980, 37870, 43280, 60592, 71960, 75740, 139037, 143920, 151480, 278074, 302960, 556148, 695185, 973259, 1112296, 1390370, 1946518, 2224592, 2780740, 3893036, 4866295, 5561480, 7786072, 9732590, 11122960, 15572144, 19465180, 38930360, 77860720]

約数ペア:

[(1, 77860720), (2, 38930360), (4, 19465180), (5, 15572144), (7, 11122960), (8, 9732590), (10, 7786072), (14, 5561480), (16, 4866295), (20, 3893036), (28, 2780740), (35, 2224592), (40, 1946518), (56, 1390370), (70, 1112296), (80, 973259), (112, 695185), (140, 556148), (257, 302960), (280, 278074), (514, 151480), (541, 143920), (560, 139037), (1028, 75740), (1082, 71960), (1285, 60592), (1799, 43280), (2056, 37870), (2164, 35980), (2570, 30296), (2705, 28784), (3598, 21640), (3787, 20560), (4112, 18935), (4328, 17990), (5140, 15148), (5410, 14392), (7196, 10820), (7574, 10280), (8656, 8995)]