21474805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^2\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 28859040

約数和(自身を除く): 7384235

約数列:

[1, 5, 11, 53, 55, 139, 265, 583, 695, 1529, 2809, 2915, 7367, 7645, 14045, 30899, 36835, 81037, 154495, 390451, 405185, 1952255, 4294961, 21474805]

約数ペア:

[(1, 21474805), (5, 4294961), (11, 1952255), (53, 405185), (55, 390451), (139, 154495), (265, 81037), (583, 36835), (695, 30899), (1529, 14045), (2809, 7645), (2915, 7367)]