18945147

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 29451520

約数和(自身を除く): 10506373

約数列:

[1, 3, 13, 19, 37, 39, 57, 111, 247, 481, 691, 703, 741, 1443, 2073, 2109, 8983, 9139, 13129, 25567, 26949, 27417, 39387, 76701, 170677, 332371, 485773, 512031, 997113, 1457319, 6315049, 18945147]

約数ペア:

[(1, 18945147), (3, 6315049), (13, 1457319), (19, 997113), (37, 512031), (39, 485773), (57, 332371), (111, 170677), (247, 76701), (481, 39387), (691, 27417), (703, 26949), (741, 25567), (1443, 13129), (2073, 9139), (2109, 8983)]