645141

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 1015808

約数和(自身を除く): 370667

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 991, 2973, 6937, 20811, 30721, 92163, 215047, 645141]

約数ペア:

[(1, 645141), (3, 215047), (7, 92163), (21, 30721), (31, 20811), (93, 6937), (217, 2973), (651, 991)]