19811307

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1\times {\mathrm{839}}^1$

素因数の和:1322

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 8251413

約数列:

[1, 3, 17, 51, 463, 839, 1389, 2517, 7871, 14263, 23613, 42789, 388457, 1165371, 6603769, 19811307]

約数ペア:

[(1, 19811307), (3, 6603769), (17, 1165371), (51, 388457), (463, 42789), (839, 23613), (1389, 14263), (2517, 7871)]