128437264

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{653}}^1$

素因数の和:1327

約数の個数: 40

約数和(自身を含む): 262751040

約数和(自身を除く): 134313776

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 647, 653, 1294, 1306, 2588, 2612, 5176, 5224, 10352, 10448, 12293, 12407, 24586, 24814, 49172, 49628, 98344, 99256, 196688, 198512, 422491, 844982, 1689964, 3379928, 6759856, 8027329, 16054658, 32109316, 64218632, 128437264]

約数ペア:

[(1, 128437264), (2, 64218632), (4, 32109316), (8, 16054658), (16, 8027329), (19, 6759856), (38, 3379928), (76, 1689964), (152, 844982), (304, 422491), (647, 198512), (653, 196688), (1294, 99256), (1306, 98344), (2588, 49628), (2612, 49172), (5176, 24814), (5224, 24586), (10352, 12407), (10448, 12293)]