2881809

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{307}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 4804800

約数和(自身を除く): 1922991

約数列:

[1, 3, 7, 9, 21, 63, 149, 307, 447, 921, 1043, 1341, 2149, 2763, 3129, 6447, 9387, 19341, 45743, 137229, 320201, 411687, 960603, 2881809]

約数ペア:

[(1, 2881809), (3, 960603), (7, 411687), (9, 320201), (21, 137229), (63, 45743), (149, 19341), (307, 9387), (447, 6447), (921, 3129), (1043, 2763), (1341, 2149)]