21199353

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43891}}^1$

素因数の和:43924

約数の個数: 16

約数和(自身を含む): 33709056

約数和(自身を除く): 12509703

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43891, 131673, 307237, 921711, 1009493, 3028479, 7066451, 21199353]

約数ペア:

[(1, 21199353), (3, 7066451), (7, 3028479), (21, 1009493), (23, 921711), (69, 307237), (161, 131673), (483, 43891)]