19801467

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10139}}^1$

素因数の和:10183

約数の個数: 24

約数和(自身を含む): 33745920

約数和(自身を除く): 13944453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10139, 30417, 70973, 91251, 212919, 314309, 638757, 942927, 2200163, 2828781, 6600489, 19801467]

約数ペア:

[(1, 19801467), (3, 6600489), (7, 2828781), (9, 2200163), (21, 942927), (31, 638757), (63, 314309), (93, 212919), (217, 91251), (279, 70973), (651, 30417), (1953, 10139)]