65555560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{911}}^1$

素因数の和:1186

約数の個数: 64

約数和(自身を含む): 169413120

約数和(自身を除く): 103857560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 911, 1028, 1285, 1799, 1822, 2056, 2570, 3598, 3644, 4555, 5140, 6377, 7196, 7288, 8995, 9110, 10280, 12754, 14392, 17990, 18220, 25508, 31885, 35980, 36440, 51016, 63770, 71960, 127540, 234127, 255080, 468254, 936508, 1170635, 1638889, 1873016, 2341270, 3277778, 4682540, 6555556, 8194445, 9365080, 13111112, 16388890, 32777780, 65555560]

約数ペア:

[(1, 65555560), (2, 32777780), (4, 16388890), (5, 13111112), (7, 9365080), (8, 8194445), (10, 6555556), (14, 4682540), (20, 3277778), (28, 2341270), (35, 1873016), (40, 1638889), (56, 1170635), (70, 936508), (140, 468254), (257, 255080), (280, 234127), (514, 127540), (911, 71960), (1028, 63770), (1285, 51016), (1799, 36440), (1822, 35980), (2056, 31885), (2570, 25508), (3598, 18220), (3644, 17990), (4555, 14392), (5140, 12754), (6377, 10280), (7196, 9110), (7288, 8995)]