21697179

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{33329}}^1$

素因数の和:33370

約数の個数: 16

約数和(自身を含む): 34129920

約数和(自身を除く): 12432741

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 33329, 99987, 233303, 699909, 1033199, 3099597, 7232393, 21697179]

約数ペア:

[(1, 21697179), (3, 7232393), (7, 3099597), (21, 1033199), (31, 699909), (93, 233303), (217, 99987), (651, 33329)]