21252608

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:165

約数の個数: 80

約数和(自身を含む): 47663616

約数和(自身を除く): 26411008

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 103, 104, 124, 128, 206, 208, 248, 256, 403, 412, 416, 496, 512, 806, 824, 832, 992, 1339, 1612, 1648, 1664, 1984, 2678, 3193, 3224, 3296, 3328, 3968, 5356, 6386, 6448, 6592, 6656, 7936, 10712, 12772, 12896, 13184, 15872, 21424, 25544, 25792, 26368, 41509, 42848, 51088, 51584, 52736, 83018, 85696, 102176, 103168, 166036, 171392, 204352, 206336, 332072, 342784, 408704, 664144, 685568, 817408, 1328288, 1634816, 2656576, 5313152, 10626304, 21252608]

約数ペア:

[(1, 21252608), (2, 10626304), (4, 5313152), (8, 2656576), (13, 1634816), (16, 1328288), (26, 817408), (31, 685568), (32, 664144), (52, 408704), (62, 342784), (64, 332072), (103, 206336), (104, 204352), (124, 171392), (128, 166036), (206, 103168), (208, 102176), (248, 85696), (256, 83018), (403, 52736), (412, 51584), (416, 51088), (496, 42848), (512, 41509), (806, 26368), (824, 25792), (832, 25544), (992, 21424), (1339, 15872), (1612, 13184), (1648, 12896), (1664, 12772), (1984, 10712), (2678, 7936), (3193, 6656), (3224, 6592), (3296, 6448), (3328, 6386), (3968, 5356)]