20199755

素因数分解:

$5^1\times {\mathrm{19}}^4\times {\mathrm{31}}^1$

素因数の和:112

約数の個数: 20

約数和(自身を含む): 26411712

約数和(自身を除く): 6211957

約数列:

[1, 5, 19, 31, 95, 155, 361, 589, 1805, 2945, 6859, 11191, 34295, 55955, 130321, 212629, 651605, 1063145, 4039951, 20199755]

約数ペア:

[(1, 20199755), (5, 4039951), (19, 1063145), (31, 651605), (95, 212629), (155, 130321), (361, 55955), (589, 34295), (1805, 11191), (2945, 6859)]