1687408989

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{380819}}^1$

素因数の和:381040

約数の個数: 16

約数和(自身を含む): 2583482880

約数和(自身を除く): 896073891

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4431, 380819, 1142457, 2665733, 7997199, 80352809, 241058427, 562469663, 1687408989]

約数ペア:

[(1, 1687408989), (3, 562469663), (7, 241058427), (21, 80352809), (211, 7997199), (633, 2665733), (1477, 1142457), (4431, 380819)]