21170967

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1\times {\mathrm{727}}^1$

素因数の和:1318

約数の個数: 16

約数和(自身を含む): 29981952

約数和(自身を除く): 8810985

約数列:

[1, 3, 17, 51, 571, 727, 1713, 2181, 9707, 12359, 29121, 37077, 415117, 1245351, 7056989, 21170967]

約数ペア:

[(1, 21170967), (3, 7056989), (17, 1245351), (51, 415117), (571, 37077), (727, 29121), (1713, 12359), (2181, 9707)]