20574561

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{2089}}^1$

素因数の和:2173

約数の個数: 24

約数和(自身を含む): 32403360

約数和(自身を除く): 11828799

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 2089, 3283, 6267, 9849, 14623, 43869, 102361, 139963, 307083, 419889, 979741, 2939223, 6858187, 20574561]

約数ペア:

[(1, 20574561), (3, 6858187), (7, 2939223), (21, 979741), (49, 419889), (67, 307083), (147, 139963), (201, 102361), (469, 43869), (1407, 14623), (2089, 9849), (3283, 6267)]