19990438

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{3217}}^1$

素因数の和:3471

約数の個数: 16

約数和(自身を含む): 32437440

約数和(自身を除く): 12447002

約数列:

[1, 2, 13, 26, 239, 478, 3107, 3217, 6214, 6434, 41821, 83642, 768863, 1537726, 9995219, 19990438]

約数ペア:

[(1, 19990438), (2, 9995219), (13, 1537726), (26, 768863), (239, 83642), (478, 41821), (3107, 6434), (3217, 6214)]