21797923

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:858

約数の個数: 16

約数和(自身を含む): 25712640

約数和(自身を除く): 3914717

約数列:

[1, 7, 61, 71, 427, 497, 719, 4331, 5033, 30317, 43859, 51049, 307013, 357343, 3113989, 21797923]

約数ペア:

[(1, 21797923), (7, 3113989), (61, 357343), (71, 307013), (427, 51049), (497, 43859), (719, 30317), (4331, 5033)]