19888905

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{57649}}^1$

素因数の和:57680

約数の個数: 16

約数和(自身を含む): 33206400

約数和(自身を除く): 13317495

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 57649, 172947, 288245, 864735, 1325927, 3977781, 6629635, 19888905]

約数ペア:

[(1, 19888905), (3, 6629635), (5, 3977781), (15, 1325927), (23, 864735), (69, 288245), (115, 172947), (345, 57649)]