21712293

素因数分解:

$3^5\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 32760000

約数和(自身を除く): 11047707

約数列:

[1, 3, 9, 27, 81, 199, 243, 449, 597, 1347, 1791, 4041, 5373, 12123, 16119, 36369, 48357, 89351, 109107, 268053, 804159, 2412477, 7237431, 21712293]

約数ペア:

[(1, 21712293), (3, 7237431), (9, 2412477), (27, 804159), (81, 268053), (199, 109107), (243, 89351), (449, 48357), (597, 36369), (1347, 16119), (1791, 12123), (4041, 5373)]