28279797

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 47093760

約数和(自身を除く): 18813963

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1459, 1491, 2769, 4377, 6461, 10213, 18967, 19383, 30639, 56901, 103589, 132769, 310767, 398307, 725123, 1346657, 2175369, 4039971, 9426599, 28279797]

約数ペア:

[(1, 28279797), (3, 9426599), (7, 4039971), (13, 2175369), (21, 1346657), (39, 725123), (71, 398307), (91, 310767), (213, 132769), (273, 103589), (497, 56901), (923, 30639), (1459, 19383), (1491, 18967), (2769, 10213), (4377, 6461)]