128207961

素因数分解:

$3^3\times 7^2\times {\mathrm{96907}}^1$

素因数の和:96930

約数の個数: 24

約数和(自身を含む): 220950240

約数和(自身を除く): 92742279

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 96907, 290721, 678349, 872163, 2035047, 2616489, 4748443, 6105141, 14245329, 18315423, 42735987, 128207961]

約数ペア:

[(1, 128207961), (3, 42735987), (7, 18315423), (9, 14245329), (21, 6105141), (27, 4748443), (49, 2616489), (63, 2035047), (147, 872163), (189, 678349), (441, 290721), (1323, 96907)]