20641983

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{653}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 28346976

約数和(自身を除く): 7704993

約数列:

[1, 3, 41, 123, 257, 653, 771, 1959, 10537, 26773, 31611, 80319, 167821, 503463, 6880661, 20641983]

約数ペア:

[(1, 20641983), (3, 6880661), (41, 503463), (123, 167821), (257, 80319), (653, 31611), (771, 26773), (1959, 10537)]