21731031

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3709}}^1$

素因数の和:3756

約数の個数: 32

約数和(自身を含む): 37990400

約数和(自身を除く): 16259369

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 3709, 5859, 11127, 25963, 33381, 77889, 100143, 114979, 233667, 344937, 701001, 804853, 1034811, 2414559, 3104433, 7243677, 21731031]

約数ペア:

[(1, 21731031), (3, 7243677), (7, 3104433), (9, 2414559), (21, 1034811), (27, 804853), (31, 701001), (63, 344937), (93, 233667), (189, 114979), (217, 100143), (279, 77889), (651, 33381), (837, 25963), (1953, 11127), (3709, 5859)]