21977991

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20521}}^1$

素因数の和:20551

約数の個数: 24

約数和(自身を含む): 38417184

約数和(自身を除く): 16439193

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20521, 61563, 143647, 184689, 348857, 430941, 1046571, 1292823, 2441999, 3139713, 7325997, 21977991]

約数ペア:

[(1, 21977991), (3, 7325997), (7, 3139713), (9, 2441999), (17, 1292823), (21, 1046571), (51, 430941), (63, 348857), (119, 184689), (153, 143647), (357, 61563), (1071, 20521)]