256406906

素因数分解:

$2^1\times 7^3\times {\mathrm{139}}^1\times {\mathrm{2689}}^1$

素因数の和:2851

約数の個数: 32

約数和(自身を含む): 451920000

約数和(自身を除く): 195513094

約数列:

[1, 2, 7, 14, 49, 98, 139, 278, 343, 686, 973, 1946, 2689, 5378, 6811, 13622, 18823, 37646, 47677, 95354, 131761, 263522, 373771, 747542, 922327, 1844654, 2616397, 5232794, 18314779, 36629558, 128203453, 256406906]

約数ペア:

[(1, 256406906), (2, 128203453), (7, 36629558), (14, 18314779), (49, 5232794), (98, 2616397), (139, 1844654), (278, 922327), (343, 747542), (686, 373771), (973, 263522), (1946, 131761), (2689, 95354), (5378, 47677), (6811, 37646), (13622, 18823)]