20405177

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:440

約数の個数: 16

約数和(自身を含む): 22723008

約数和(自身を除く): 2317831

約数列:

[1, 13, 43, 173, 211, 559, 2249, 2743, 7439, 9073, 36503, 96707, 117949, 474539, 1569629, 20405177]

約数ペア:

[(1, 20405177), (13, 1569629), (43, 474539), (173, 117949), (211, 96707), (559, 36503), (2249, 9073), (2743, 7439)]