68880721

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1621

約数の個数: 24

約数和(自身を含む): 87562944

約数和(自身を除く): 18682223

約数列:

[1, 7, 13, 49, 71, 91, 497, 637, 923, 1523, 3479, 6461, 10661, 19799, 45227, 74627, 108133, 138593, 756931, 970151, 1405729, 5298517, 9840103, 68880721]

約数ペア:

[(1, 68880721), (7, 9840103), (13, 5298517), (49, 1405729), (71, 970151), (91, 756931), (497, 138593), (637, 108133), (923, 74627), (1523, 45227), (3479, 19799), (6461, 10661)]