21038409

素因数分解:

$3^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{797}}^1$

素因数の和:1229

約数の個数: 24

約数和(自身を含む): 34856640

約数和(自身を除く): 13818231

約数列:

[1, 3, 7, 9, 21, 63, 419, 797, 1257, 2391, 2933, 3771, 5579, 7173, 8799, 16737, 26397, 50211, 333943, 1001829, 2337601, 3005487, 7012803, 21038409]

約数ペア:

[(1, 21038409), (3, 7012803), (7, 3005487), (9, 2337601), (21, 1001829), (63, 333943), (419, 50211), (797, 26397), (1257, 16737), (2391, 8799), (2933, 7173), (3771, 5579)]