215681921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{7621}}^1$

素因数の和:7952

約数の個数: 16

約数和(自身を含む): 266343168

約数和(自身を除く): 50661247

約数列:

[1, 7, 13, 91, 311, 2177, 4043, 7621, 28301, 53347, 99073, 693511, 2370131, 16590917, 30811703, 215681921]

約数ペア:

[(1, 215681921), (7, 30811703), (13, 16590917), (91, 2370131), (311, 693511), (2177, 99073), (4043, 53347), (7621, 28301)]