19721315

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:910

約数の個数: 16

約数和(自身を含む): 24359616

約数和(自身を除く): 4638301

約数列:

[1, 5, 71, 73, 355, 365, 761, 3805, 5183, 25915, 54031, 55553, 270155, 277765, 3944263, 19721315]

約数ペア:

[(1, 19721315), (5, 3944263), (71, 277765), (73, 270155), (355, 55553), (365, 54031), (761, 25915), (3805, 5183)]