19890544

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{73127}}^1$

素因数の和:73152

約数の個数: 20

約数和(自身を含む): 40805424

約数和(自身を除く): 20914880

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 73127, 146254, 292508, 585016, 1170032, 1243159, 2486318, 4972636, 9945272, 19890544]

約数ペア:

[(1, 19890544), (2, 9945272), (4, 4972636), (8, 2486318), (16, 1243159), (17, 1170032), (34, 585016), (68, 292508), (136, 146254), (272, 73127)]