20406989407

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2947709}}^1$

素因数の和:2947782

約数の個数: 16

約数和(自身を含む): 24902254080

約数和(自身を除く): 4495264673

約数列:

[1, 7, 23, 43, 161, 301, 989, 6923, 2947709, 20633963, 67797307, 126751487, 474581149, 887260409, 2915284201, 20406989407]

約数ペア:

[(1, 20406989407), (7, 2915284201), (23, 887260409), (43, 474581149), (161, 126751487), (301, 67797307), (989, 20633963), (6923, 2947709)]