20549991

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5233}}^1$

素因数の和:5271

約数の個数: 32

約数和(自身を含む): 36177408

約数和(自身を除く): 15627417

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5233, 15699, 36631, 57563, 88961, 109893, 172689, 266883, 402941, 622727, 978571, 1208823, 1868181, 2935713, 6849997, 20549991]

約数ペア:

[(1, 20549991), (3, 6849997), (7, 2935713), (11, 1868181), (17, 1208823), (21, 978571), (33, 622727), (51, 402941), (77, 266883), (119, 172689), (187, 109893), (231, 88961), (357, 57563), (561, 36631), (1309, 15699), (3927, 5233)]