20851803

素因数分解:

$3^3\times 7^2\times {\mathrm{15761}}^1$

素因数の和:15784

約数の個数: 24

約数和(自身を含む): 35937360

約数和(自身を除く): 15085557

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15761, 47283, 110327, 141849, 330981, 425547, 772289, 992943, 2316867, 2978829, 6950601, 20851803]

約数ペア:

[(1, 20851803), (3, 6950601), (7, 2978829), (9, 2316867), (21, 992943), (27, 772289), (49, 425547), (63, 330981), (147, 141849), (189, 110327), (441, 47283), (1323, 15761)]