19990743

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1\times {\mathrm{439}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 27413760

約数和(自身を除く): 7423017

約数列:

[1, 3, 43, 129, 353, 439, 1059, 1317, 15179, 18877, 45537, 56631, 154967, 464901, 6663581, 19990743]

約数ペア:

[(1, 19990743), (3, 6663581), (43, 464901), (129, 154967), (353, 56631), (439, 45537), (1059, 18877), (1317, 15179)]