256688242

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 402494400

約数和(自身を除く): 145806158

約数列:

[1, 2, 43, 86, 109, 139, 197, 218, 278, 394, 4687, 5977, 8471, 9374, 11954, 15151, 16942, 21473, 27383, 30302, 42946, 54766, 651493, 923339, 1177469, 1302986, 1846678, 2354938, 2984747, 5969494, 128344121, 256688242]

約数ペア:

[(1, 256688242), (2, 128344121), (43, 5969494), (86, 2984747), (109, 2354938), (139, 1846678), (197, 1302986), (218, 1177469), (278, 923339), (394, 651493), (4687, 54766), (5977, 42946), (8471, 30302), (9374, 27383), (11954, 21473), (15151, 16942)]