256487556

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{2557}}^1$

素因数の和:3220

約数の個数: 48

約数和(自身を含む): 645761984

約数和(自身を除く): 389274428

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 643, 1286, 1929, 2557, 2572, 3858, 5114, 7671, 7716, 8359, 10228, 15342, 16718, 25077, 30684, 33241, 33436, 50154, 66482, 99723, 100308, 132964, 199446, 398892, 1644151, 3288302, 4932453, 6576604, 9864906, 19729812, 21373963, 42747926, 64121889, 85495852, 128243778, 256487556]

約数ペア:

[(1, 256487556), (2, 128243778), (3, 85495852), (4, 64121889), (6, 42747926), (12, 21373963), (13, 19729812), (26, 9864906), (39, 6576604), (52, 4932453), (78, 3288302), (156, 1644151), (643, 398892), (1286, 199446), (1929, 132964), (2557, 100308), (2572, 99723), (3858, 66482), (5114, 50154), (7671, 33436), (7716, 33241), (8359, 30684), (10228, 25077), (15342, 16718)]