21697347

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{2203}}^1$

素因数の和:2287

約数の個数: 24

約数和(自身を含む): 34170816

約数和(自身を除く): 12473469

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 2203, 3283, 6609, 9849, 15421, 46263, 107947, 147601, 323841, 442803, 1033207, 3099621, 7232449, 21697347]

約数ペア:

[(1, 21697347), (3, 7232449), (7, 3099621), (21, 1033207), (49, 442803), (67, 323841), (147, 147601), (201, 107947), (469, 46263), (1407, 15421), (2203, 9849), (3283, 6609)]