19287079

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:486

約数の個数: 16

約数和(自身を含む): 22588416

約数和(自身を除く): 3301337

約数列:

[1, 7, 71, 151, 257, 497, 1057, 1799, 10721, 18247, 38807, 75047, 127729, 271649, 2755297, 19287079]

約数ペア:

[(1, 19287079), (7, 2755297), (71, 271649), (151, 127729), (257, 75047), (497, 38807), (1057, 18247), (1799, 10721)]