20187861

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{2377}}^1$

素因数の和:2548

約数の個数: 16

約数和(自身を含む): 28536000

約数和(自身を除く): 8348139

約数列:

[1, 3, 19, 57, 149, 447, 2377, 2831, 7131, 8493, 45163, 135489, 354173, 1062519, 6729287, 20187861]

約数ペア:

[(1, 20187861), (3, 6729287), (19, 1062519), (57, 354173), (149, 135489), (447, 45163), (2377, 8493), (2831, 7131)]