18468875

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2081}}^1$

素因数の和:2167

約数の個数: 16

約数和(自身を含む): 23385024

約数和(自身を除く): 4916149

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2081, 8875, 10405, 52025, 147751, 260125, 738755, 3693775, 18468875]

約数ペア:

[(1, 18468875), (5, 3693775), (25, 738755), (71, 260125), (125, 147751), (355, 52025), (1775, 10405), (2081, 8875)]