20743317

素因数分解:

$3^3\times 7^2\times {\mathrm{15679}}^1$

素因数の和:15702

約数の個数: 24

約数和(自身を含む): 35750400

約数和(自身を除く): 15007083

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15679, 47037, 109753, 141111, 329259, 423333, 768271, 987777, 2304813, 2963331, 6914439, 20743317]

約数ペア:

[(1, 20743317), (3, 6914439), (7, 2963331), (9, 2304813), (21, 987777), (27, 768271), (49, 423333), (63, 329259), (147, 141111), (189, 109753), (441, 47037), (1323, 15679)]