19979427

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{1427}}^1$

素因数の和:1802

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 8809053

約数列:

[1, 3, 13, 39, 359, 1077, 1427, 4281, 4667, 14001, 18551, 55653, 512293, 1536879, 6659809, 19979427]

約数ペア:

[(1, 19979427), (3, 6659809), (13, 1536879), (39, 512293), (359, 55653), (1077, 18551), (1427, 14001), (4281, 4667)]