81820225

素因数分解:

$5^2\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 104055840

約数和(自身を除く): 22235615

約数列:

[1, 5, 25, 73, 107, 365, 419, 535, 1825, 2095, 2675, 7811, 10475, 30587, 39055, 44833, 152935, 195275, 224165, 764675, 1120825, 3272809, 16364045, 81820225]

約数ペア:

[(1, 81820225), (5, 16364045), (25, 3272809), (73, 1120825), (107, 764675), (365, 224165), (419, 195275), (535, 152935), (1825, 44833), (2095, 39055), (2675, 30587), (7811, 10475)]