16420047

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5879}}^1$

素因数の和:5915

約数の個数: 24

約数和(自身を含む): 26812800

約数和(自身を除く): 10392753

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 5879, 17637, 41153, 111701, 123459, 288071, 335103, 781907, 864213, 2345721, 5473349, 16420047]

約数ペア:

[(1, 16420047), (3, 5473349), (7, 2345721), (19, 864213), (21, 781907), (49, 335103), (57, 288071), (133, 123459), (147, 111701), (399, 41153), (931, 17637), (2793, 5879)]