20900187

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1117}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 39067392

約数和(自身を除く): 18167205

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 567, 693, 891, 1117, 1701, 2079, 2673, 3351, 6237, 7819, 10053, 12287, 18711, 23457, 30159, 36861, 70371, 86009, 90477, 110583, 211113, 258027, 271431, 331749, 633339, 774081, 995247, 1900017, 2322243, 2985741, 6966729, 20900187]

約数ペア:

[(1, 20900187), (3, 6966729), (7, 2985741), (9, 2322243), (11, 1900017), (21, 995247), (27, 774081), (33, 633339), (63, 331749), (77, 271431), (81, 258027), (99, 211113), (189, 110583), (231, 90477), (243, 86009), (297, 70371), (567, 36861), (693, 30159), (891, 23457), (1117, 18711), (1701, 12287), (2079, 10053), (2673, 7819), (3351, 6237)]