19900185

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{30853}}^1$

素因数の和:30904

約数の個数: 16

約数和(自身を含む): 32581824

約数和(自身を除く): 12681639

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 30853, 92559, 154265, 462795, 1326679, 3980037, 6633395, 19900185]

約数ペア:

[(1, 19900185), (3, 6633395), (5, 3980037), (15, 1326679), (43, 462795), (129, 154265), (215, 92559), (645, 30853)]