21123126

素因数分解:

$2^1\times 3^3\times {\mathrm{443}}^1\times {\mathrm{883}}^1$

素因数の和:1337

約数の個数: 32

約数和(自身を含む): 47099520

約数和(自身を除く): 25976394

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 443, 883, 886, 1329, 1766, 2649, 2658, 3987, 5298, 7947, 7974, 11961, 15894, 23841, 23922, 47682, 391169, 782338, 1173507, 2347014, 3520521, 7041042, 10561563, 21123126]

約数ペア:

[(1, 21123126), (2, 10561563), (3, 7041042), (6, 3520521), (9, 2347014), (18, 1173507), (27, 782338), (54, 391169), (443, 47682), (883, 23922), (886, 23841), (1329, 15894), (1766, 11961), (2649, 7974), (2658, 7947), (3987, 5298)]