20589219

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4603}}^1$

素因数の和:4687

約数の個数: 24

約数和(自身を含む): 34474752

約数和(自身を除く): 13885533

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4603, 13809, 32221, 41427, 96663, 289989, 326813, 980439, 2287691, 2941317, 6863073, 20589219]

約数ペア:

[(1, 20589219), (3, 6863073), (7, 2941317), (9, 2287691), (21, 980439), (63, 326813), (71, 289989), (213, 96663), (497, 41427), (639, 32221), (1491, 13809), (4473, 4603)]