28367339

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1667}}^1$

素因数の和:1715

約数の個数: 32

約数和(自身を含む): 40352256

約数和(自身を除く): 11984917

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1309, 1547, 1667, 2431, 11669, 17017, 18337, 21671, 28339, 128359, 151697, 198373, 238381, 311729, 368407, 1668667, 2182103, 2578849, 4052477, 28367339]

約数ペア:

[(1, 28367339), (7, 4052477), (11, 2578849), (13, 2182103), (17, 1668667), (77, 368407), (91, 311729), (119, 238381), (143, 198373), (187, 151697), (221, 128359), (1001, 28339), (1309, 21671), (1547, 18337), (1667, 17017), (2431, 11669)]