21734979

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{743}}^1$

素因数の和:959

約数の個数: 24

約数和(自身を含む): 33926400

約数和(自身を除く): 12191421

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 743, 1393, 2229, 4179, 5201, 9751, 15603, 29253, 36407, 109221, 147857, 443571, 1034999, 3104997, 7244993, 21734979]

約数ペア:

[(1, 21734979), (3, 7244993), (7, 3104997), (21, 1034999), (49, 443571), (147, 147857), (199, 109221), (597, 36407), (743, 29253), (1393, 15603), (2229, 9751), (4179, 5201)]