128319478

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 238841856

約数和(自身を除く): 110522378

約数列:

[1, 2, 7, 14, 31, 37, 61, 62, 74, 122, 131, 217, 259, 262, 427, 434, 518, 854, 917, 1147, 1834, 1891, 2257, 2294, 3782, 4061, 4514, 4847, 7991, 8029, 8122, 9694, 13237, 15799, 15982, 16058, 26474, 28427, 31598, 33929, 55937, 56854, 67858, 69967, 111874, 139934, 150257, 247721, 295667, 300514, 489769, 495442, 591334, 979538, 1051799, 1734047, 2069669, 2103598, 3468094, 4139338, 9165677, 18331354, 64159739, 128319478]

約数ペア:

[(1, 128319478), (2, 64159739), (7, 18331354), (14, 9165677), (31, 4139338), (37, 3468094), (61, 2103598), (62, 2069669), (74, 1734047), (122, 1051799), (131, 979538), (217, 591334), (259, 495442), (262, 489769), (427, 300514), (434, 295667), (518, 247721), (854, 150257), (917, 139934), (1147, 111874), (1834, 69967), (1891, 67858), (2257, 56854), (2294, 55937), (3782, 33929), (4061, 31598), (4514, 28427), (4847, 26474), (7991, 16058), (8029, 15982), (8122, 15799), (9694, 13237)]