20729247

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4723}}^1$

素因数の和:4763

約数の個数: 32

約数和(自身を含む): 36280320

約数和(自身を除く): 15551073

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4723, 14169, 33061, 51953, 89737, 99183, 155859, 269211, 363671, 628159, 987107, 1091013, 1884477, 2961321, 6909749, 20729247]

約数ペア:

[(1, 20729247), (3, 6909749), (7, 2961321), (11, 1884477), (19, 1091013), (21, 987107), (33, 628159), (57, 363671), (77, 269211), (133, 155859), (209, 99183), (231, 89737), (399, 51953), (627, 33061), (1463, 14169), (4389, 4723)]