20425503

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3389}}^1$

素因数の和:3447

約数の個数: 24

約数和(自身を含む): 32462640

約数和(自身を除く): 12037137

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3389, 6027, 10167, 23723, 71169, 138949, 166061, 416847, 498183, 972643, 2917929, 6808501, 20425503]

約数ペア:

[(1, 20425503), (3, 6808501), (7, 2917929), (21, 972643), (41, 498183), (49, 416847), (123, 166061), (147, 138949), (287, 71169), (861, 23723), (2009, 10167), (3389, 6027)]