28682381

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 37981440

約数和(自身を除く): 9299059

約数列:

[1, 7, 13, 19, 53, 91, 133, 247, 313, 371, 689, 1007, 1729, 2191, 4069, 4823, 5947, 7049, 13091, 16589, 28483, 41629, 77311, 91637, 116123, 215657, 315191, 541177, 1509599, 2206337, 4097483, 28682381]

約数ペア:

[(1, 28682381), (7, 4097483), (13, 2206337), (19, 1509599), (53, 541177), (91, 315191), (133, 215657), (247, 116123), (313, 91637), (371, 77311), (689, 41629), (1007, 28483), (1729, 16589), (2191, 13091), (4069, 7049), (4823, 5947)]