20871081

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10039}}^1$

素因数の和:10066

約数の個数: 32

約数和(自身を含む): 38553600

約数和(自身を除く): 17682519

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10039, 30117, 70273, 90351, 110429, 210819, 271053, 331287, 632457, 773003, 993861, 1897371, 2319009, 2981583, 6957027, 20871081]

約数ペア:

[(1, 20871081), (3, 6957027), (7, 2981583), (9, 2319009), (11, 1897371), (21, 993861), (27, 773003), (33, 632457), (63, 331287), (77, 271053), (99, 210819), (189, 110429), (231, 90351), (297, 70273), (693, 30117), (2079, 10039)]