21971191

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{401}}^1$

素因数の和:722

約数の個数: 16

約数和(自身を含む): 25528608

約数和(自身を除く): 3557417

約数列:

[1, 11, 17, 187, 293, 401, 3223, 4411, 4981, 6817, 54791, 74987, 117493, 1292423, 1997381, 21971191]

約数ペア:

[(1, 21971191), (11, 1997381), (17, 1292423), (187, 117493), (293, 74987), (401, 54791), (3223, 6817), (4411, 4981)]