21339952

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:697

約数の個数: 40

約数和(自身を含む): 43640064

約数和(自身を除く): 22300112

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 103, 184, 206, 368, 412, 563, 824, 1126, 1648, 2252, 2369, 4504, 4738, 9008, 9476, 12949, 18952, 25898, 37904, 51796, 57989, 103592, 115978, 207184, 231956, 463912, 927824, 1333747, 2667494, 5334988, 10669976, 21339952]

約数ペア:

[(1, 21339952), (2, 10669976), (4, 5334988), (8, 2667494), (16, 1333747), (23, 927824), (46, 463912), (92, 231956), (103, 207184), (184, 115978), (206, 103592), (368, 57989), (412, 51796), (563, 37904), (824, 25898), (1126, 18952), (1648, 12949), (2252, 9476), (2369, 9008), (4504, 4738)]