20158983

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1$

素因数の和:828

約数の個数: 32

約数和(自身を含む): 32614400

約数和(自身を除く): 12455417

約数列:

[1, 3, 9, 13, 27, 39, 79, 117, 237, 351, 711, 727, 1027, 2133, 2181, 3081, 6543, 9243, 9451, 19629, 27729, 28353, 57433, 85059, 172299, 255177, 516897, 746629, 1550691, 2239887, 6719661, 20158983]

約数ペア:

[(1, 20158983), (3, 6719661), (9, 2239887), (13, 1550691), (27, 746629), (39, 516897), (79, 255177), (117, 172299), (237, 85059), (351, 57433), (711, 28353), (727, 27729), (1027, 19629), (2133, 9451), (2181, 9243), (3081, 6543)]