21310718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{277}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 37830240

約数和(自身を除く): 16519522

約数列:

[1, 2, 11, 13, 22, 26, 143, 269, 277, 286, 538, 554, 2959, 3047, 3497, 3601, 5918, 6094, 6994, 7202, 38467, 39611, 74513, 76934, 79222, 149026, 819643, 968669, 1639286, 1937338, 10655359, 21310718]

約数ペア:

[(1, 21310718), (2, 10655359), (11, 1937338), (13, 1639286), (22, 968669), (26, 819643), (143, 149026), (269, 79222), (277, 76934), (286, 74513), (538, 39611), (554, 38467), (2959, 7202), (3047, 6994), (3497, 6094), (3601, 5918)]