27778221

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20173}}^1$

素因数の和:20202

約数の個数: 20

約数和(自身を含む): 43938972

約数和(自身を除く): 16160751

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20173, 60519, 181557, 342941, 544671, 1028823, 1634013, 3086469, 9259407, 27778221]

約数ペア:

[(1, 27778221), (3, 9259407), (9, 3086469), (17, 1634013), (27, 1028823), (51, 544671), (81, 342941), (153, 181557), (459, 60519), (1377, 20173)]