20884287

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{2459}}^1$

素因数の和:2630

約数の個数: 16

約数和(自身を含む): 29520000

約数和(自身を除く): 8635713

約数列:

[1, 3, 19, 57, 149, 447, 2459, 2831, 7377, 8493, 46721, 140163, 366391, 1099173, 6961429, 20884287]

約数ペア:

[(1, 20884287), (3, 6961429), (19, 1099173), (57, 366391), (149, 140163), (447, 46721), (2459, 8493), (2831, 7377)]