21599991

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6469}}^1$

素因数の和:6535

約数の個数: 24

約数和(自身を含む): 36335520

約数和(自身を除く): 14735529

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6469, 19407, 45283, 58221, 135849, 342857, 407547, 1028571, 2399999, 3085713, 7199997, 21599991]

約数ペア:

[(1, 21599991), (3, 7199997), (7, 3085713), (9, 2399999), (21, 1028571), (53, 407547), (63, 342857), (159, 135849), (371, 58221), (477, 45283), (1113, 19407), (3339, 6469)]