19990839

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{12889}}^1$

素因数の和:12950

約数の個数: 16

約数和(自身を含む): 29698560

約数和(自身を除く): 9707721

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 12889, 38667, 141779, 425337, 605783, 1817349, 6663613, 19990839]

約数ペア:

[(1, 19990839), (3, 6663613), (11, 1817349), (33, 605783), (47, 425337), (141, 141779), (517, 38667), (1551, 12889)]