21311693

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1321}}^1$

素因数の和:1424

約数の個数: 16

約数和(自身を含む): 24652656

約数和(自身を除く): 3340963

約数列:

[1, 13, 17, 73, 221, 949, 1241, 1321, 16133, 17173, 22457, 96433, 291941, 1253629, 1639361, 21311693]

約数ペア:

[(1, 21311693), (13, 1639361), (17, 1253629), (73, 291941), (221, 96433), (949, 22457), (1241, 17173), (1321, 16133)]