27857921

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{433}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 35325864

約数和(自身を除く): 7467943

約数列:

[1, 7, 13, 49, 91, 101, 433, 637, 707, 1313, 3031, 4949, 5629, 9191, 21217, 39403, 43733, 64337, 275821, 306131, 568529, 2142917, 3979703, 27857921]

約数ペア:

[(1, 27857921), (7, 3979703), (13, 2142917), (49, 568529), (91, 306131), (101, 275821), (433, 64337), (637, 43733), (707, 39403), (1313, 21217), (3031, 9191), (4949, 5629)]