20257923

素因数分解:

$3^1\times 7^3\times {\mathrm{19687}}^1$

素因数の和:19711

約数の個数: 16

約数和(自身を含む): 31500800

約数和(自身を除く): 11242877

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 19687, 59061, 137809, 413427, 964663, 2893989, 6752641, 20257923]

約数ペア:

[(1, 20257923), (3, 6752641), (7, 2893989), (21, 964663), (49, 413427), (147, 137809), (343, 59061), (1029, 19687)]