19998591

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1\times {\mathrm{337}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 27126528

約数和(自身を除く): 7127937

約数列:

[1, 3, 131, 151, 337, 393, 453, 1011, 19781, 44147, 50887, 59343, 132441, 152661, 6666197, 19998591]

約数ペア:

[(1, 19998591), (3, 6666197), (131, 152661), (151, 132441), (337, 59343), (393, 50887), (453, 44147), (1011, 19781)]