20257167

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 33892352

約数和(自身を除く): 13635185

約数列:

[1, 3, 7, 21, 29, 31, 37, 87, 93, 111, 203, 217, 259, 609, 651, 777, 841, 899, 1073, 1147, 2523, 2697, 3219, 3441, 5887, 6293, 7511, 8029, 17661, 18879, 22533, 24087, 26071, 31117, 33263, 78213, 93351, 99789, 182497, 217819, 232841, 547491, 653457, 698523, 964627, 2893881, 6752389, 20257167]

約数ペア:

[(1, 20257167), (3, 6752389), (7, 2893881), (21, 964627), (29, 698523), (31, 653457), (37, 547491), (87, 232841), (93, 217819), (111, 182497), (203, 99789), (217, 93351), (259, 78213), (609, 33263), (651, 31117), (777, 26071), (841, 24087), (899, 22533), (1073, 18879), (1147, 17661), (2523, 8029), (2697, 7511), (3219, 6293), (3441, 5887)]