28390921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{839}}^1$

素因数の和:1008

約数の個数: 16

約数和(自身を含む): 32457600

約数和(自身を除く): 4066679

約数列:

[1, 13, 19, 137, 247, 839, 1781, 2603, 10907, 15941, 33839, 114943, 207233, 1494259, 2183917, 28390921]

約数ペア:

[(1, 28390921), (13, 2183917), (19, 1494259), (137, 207233), (247, 114943), (839, 33839), (1781, 15941), (2603, 10907)]