28939113

素因数分解:

$3^6\times 7^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:185

約数の個数: 56

約数和(自身を含む): 50995008

約数和(自身を除く): 22055895

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 107, 159, 189, 243, 321, 371, 477, 567, 729, 749, 963, 1113, 1431, 1701, 2247, 2889, 3339, 4293, 5103, 5671, 6741, 8667, 10017, 12879, 17013, 20223, 26001, 30051, 38637, 39697, 51039, 60669, 78003, 90153, 119091, 153117, 182007, 270459, 357273, 459351, 546021, 1071819, 1378053, 3215457, 4134159, 9646371, 28939113]

約数ペア:

[(1, 28939113), (3, 9646371), (7, 4134159), (9, 3215457), (21, 1378053), (27, 1071819), (53, 546021), (63, 459351), (81, 357273), (107, 270459), (159, 182007), (189, 153117), (243, 119091), (321, 90153), (371, 78003), (477, 60669), (567, 51039), (729, 39697), (749, 38637), (963, 30051), (1113, 26001), (1431, 20223), (1701, 17013), (2247, 12879), (2889, 10017), (3339, 8667), (4293, 6741), (5103, 5671)]