20901159

素因数分解:

$3^7\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12161241

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 503, 513, 729, 1509, 1539, 2187, 4527, 4617, 9557, 13581, 13851, 28671, 40743, 41553, 86013, 122229, 258039, 366687, 774117, 1100061, 2322351, 6967053, 20901159]

約数ペア:

[(1, 20901159), (3, 6967053), (9, 2322351), (19, 1100061), (27, 774117), (57, 366687), (81, 258039), (171, 122229), (243, 86013), (503, 41553), (513, 40743), (729, 28671), (1509, 13851), (1539, 13581), (2187, 9557), (4527, 4617)]