21298021265

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{1559}}^1\times {\mathrm{20857}}^1$

素因数の和:22552

約数の個数: 16

約数和(自身を含む): 25770476160

約数和(自身を除く): 4472454895

約数列:

[1, 5, 131, 655, 1559, 7795, 20857, 104285, 204229, 1021145, 2732267, 13661335, 32516063, 162580315, 4259604253, 21298021265]

約数ペア:

[(1, 21298021265), (5, 4259604253), (131, 162580315), (655, 32516063), (1559, 13661335), (7795, 2732267), (20857, 1021145), (104285, 204229)]