256667998

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1\times {\mathrm{443}}^1$

素因数の和:736

約数の個数: 32

約数和(自身を含む): 413452800

約数和(自身を除く): 156784802

約数列:

[1, 2, 19, 38, 79, 158, 193, 386, 443, 886, 1501, 3002, 3667, 7334, 8417, 15247, 16834, 30494, 34997, 69994, 85499, 170998, 289693, 579386, 664943, 1329886, 1624481, 3248962, 6754421, 13508842, 128333999, 256667998]

約数ペア:

[(1, 256667998), (2, 128333999), (19, 13508842), (38, 6754421), (79, 3248962), (158, 1624481), (193, 1329886), (386, 664943), (443, 579386), (886, 289693), (1501, 170998), (3002, 85499), (3667, 69994), (7334, 34997), (8417, 30494), (15247, 16834)]