19901727

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{15683}}^1$

素因数の和:15739

約数の個数: 16

約数和(自身を含む): 30113280

約数和(自身を除く): 10211553

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 15683, 47049, 141147, 423441, 737101, 2211303, 6633909, 19901727]

約数ペア:

[(1, 19901727), (3, 6633909), (9, 2211303), (27, 737101), (47, 423441), (141, 141147), (423, 47049), (1269, 15683)]