18981831

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 10255929

約数列:

[1, 3, 11, 23, 33, 69, 89, 253, 267, 281, 759, 843, 979, 2047, 2937, 3091, 6141, 6463, 9273, 19389, 22517, 25009, 67551, 71093, 75027, 213279, 275099, 575207, 825297, 1725621, 6327277, 18981831]

約数ペア:

[(1, 18981831), (3, 6327277), (11, 1725621), (23, 825297), (33, 575207), (69, 275099), (89, 213279), (253, 75027), (267, 71093), (281, 67551), (759, 25009), (843, 22517), (979, 19389), (2047, 9273), (2937, 6463), (3091, 6141)]