261426256

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:876

約数の個数: 80

約数和(自身を含む): 626348800

約数和(自身を除く): 364922544

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 409, 439, 728, 818, 878, 1456, 1636, 1756, 2863, 3073, 3272, 3512, 5317, 5707, 5726, 6146, 6544, 7024, 10634, 11414, 11452, 12292, 21268, 22828, 22904, 24584, 37219, 39949, 42536, 45656, 45808, 49168, 74438, 79898, 85072, 91312, 148876, 159796, 179551, 297752, 319592, 359102, 595504, 639184, 718204, 1256857, 1436408, 2334163, 2513714, 2872816, 4668326, 5027428, 9336652, 10054856, 16339141, 18673304, 20109712, 32678282, 37346608, 65356564, 130713128, 261426256]

約数ペア:

[(1, 261426256), (2, 130713128), (4, 65356564), (7, 37346608), (8, 32678282), (13, 20109712), (14, 18673304), (16, 16339141), (26, 10054856), (28, 9336652), (52, 5027428), (56, 4668326), (91, 2872816), (104, 2513714), (112, 2334163), (182, 1436408), (208, 1256857), (364, 718204), (409, 639184), (439, 595504), (728, 359102), (818, 319592), (878, 297752), (1456, 179551), (1636, 159796), (1756, 148876), (2863, 91312), (3073, 85072), (3272, 79898), (3512, 74438), (5317, 49168), (5707, 45808), (5726, 45656), (6146, 42536), (6544, 39949), (7024, 37219), (10634, 24584), (11414, 22904), (11452, 22828), (12292, 21268)]