19979391

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{2539}}^1$

素因数の和:2646

約数の個数: 16

約数和(自身を含む): 27716480

約数和(自身を除く): 7737089

約数列:

[1, 3, 43, 61, 129, 183, 2539, 2623, 7617, 7869, 109177, 154879, 327531, 464637, 6659797, 19979391]

約数ペア:

[(1, 19979391), (3, 6659797), (43, 464637), (61, 327531), (129, 154879), (183, 109177), (2539, 7869), (2623, 7617)]