81408636

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{42667}}^1$

素因数の和:42730

約数の個数: 36

約数和(自身を含む): 209670552

約数和(自身を除く): 128261916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 42667, 85334, 128001, 170668, 256002, 384003, 512004, 768006, 1536012, 2261351, 4522702, 6784053, 9045404, 13568106, 20352159, 27136212, 40704318, 81408636]

約数ペア:

[(1, 81408636), (2, 40704318), (3, 27136212), (4, 20352159), (6, 13568106), (9, 9045404), (12, 6784053), (18, 4522702), (36, 2261351), (53, 1536012), (106, 768006), (159, 512004), (212, 384003), (318, 256002), (477, 170668), (636, 128001), (954, 85334), (1908, 42667)]