28387216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{653}}^1$

素因数の和:704

約数の個数: 80

約数和(自身を含む): 68120640

約数和(自身を除く): 39733424

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 176, 208, 209, 247, 286, 304, 418, 494, 572, 653, 836, 988, 1144, 1306, 1672, 1976, 2288, 2612, 2717, 3344, 3952, 5224, 5434, 7183, 8489, 10448, 10868, 12407, 14366, 16978, 21736, 24814, 28732, 33956, 43472, 49628, 57464, 67912, 93379, 99256, 114928, 135824, 136477, 161291, 186758, 198512, 272954, 322582, 373516, 545908, 645164, 747032, 1091816, 1290328, 1494064, 1774201, 2183632, 2580656, 3548402, 7096804, 14193608, 28387216]

約数ペア:

[(1, 28387216), (2, 14193608), (4, 7096804), (8, 3548402), (11, 2580656), (13, 2183632), (16, 1774201), (19, 1494064), (22, 1290328), (26, 1091816), (38, 747032), (44, 645164), (52, 545908), (76, 373516), (88, 322582), (104, 272954), (143, 198512), (152, 186758), (176, 161291), (208, 136477), (209, 135824), (247, 114928), (286, 99256), (304, 93379), (418, 67912), (494, 57464), (572, 49628), (653, 43472), (836, 33956), (988, 28732), (1144, 24814), (1306, 21736), (1672, 16978), (1976, 14366), (2288, 12407), (2612, 10868), (2717, 10448), (3344, 8489), (3952, 7183), (5224, 5434)]