81214840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12611}}^1$

素因数の和:12652

約数の個数: 64

約数和(自身を含む): 217935360

約数和(自身を除く): 136720520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 12611, 25222, 50444, 63055, 88277, 100888, 126110, 176554, 252220, 290053, 353108, 441385, 504440, 580106, 706216, 882770, 1160212, 1450265, 1765540, 2030371, 2320424, 2900530, 3531080, 4060742, 5801060, 8121484, 10151855, 11602120, 16242968, 20303710, 40607420, 81214840]

約数ペア:

[(1, 81214840), (2, 40607420), (4, 20303710), (5, 16242968), (7, 11602120), (8, 10151855), (10, 8121484), (14, 5801060), (20, 4060742), (23, 3531080), (28, 2900530), (35, 2320424), (40, 2030371), (46, 1765540), (56, 1450265), (70, 1160212), (92, 882770), (115, 706216), (140, 580106), (161, 504440), (184, 441385), (230, 353108), (280, 290053), (322, 252220), (460, 176554), (644, 126110), (805, 100888), (920, 88277), (1288, 63055), (1610, 50444), (3220, 25222), (6440, 12611)]