20154573

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2741}}^1$

素因数の和:2809

約数の個数: 24

約数和(自身を含む): 31368480

約数和(自身を除く): 11213907

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2741, 7353, 8223, 24669, 52079, 117863, 156237, 353589, 468711, 1060767, 2239397, 6718191, 20154573]

約数ペア:

[(1, 20154573), (3, 6718191), (9, 2239397), (19, 1060767), (43, 468711), (57, 353589), (129, 156237), (171, 117863), (387, 52079), (817, 24669), (2451, 8223), (2741, 7353)]