20188925

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2237}}^1$

素因数の和:2285

約数の個数: 18

約数和(自身を含む): 26433018

約数和(自身を除く): 6244093

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2237, 9025, 11185, 42503, 55925, 212515, 807557, 1062575, 4037785, 20188925]

約数ペア:

[(1, 20188925), (5, 4037785), (19, 1062575), (25, 807557), (95, 212515), (361, 55925), (475, 42503), (1805, 11185), (2237, 9025)]