2121021

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 3541824

約数和(自身を除く): 1420803

約数列:

[1, 3, 7, 9, 21, 63, 131, 257, 393, 771, 917, 1179, 1799, 2313, 2751, 5397, 8253, 16191, 33667, 101001, 235669, 303003, 707007, 2121021]

約数ペア:

[(1, 2121021), (3, 707007), (7, 303003), (9, 235669), (21, 101001), (63, 33667), (131, 16191), (257, 8253), (393, 5397), (771, 2751), (917, 2313), (1179, 1799)]