21340423

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1583}}^1$

素因数の和:1674

約数の個数: 16

約数和(自身を含む): 24748416

約数和(自身を除く): 3407993

約数列:

[1, 13, 17, 61, 221, 793, 1037, 1583, 13481, 20579, 26911, 96563, 349843, 1255319, 1641571, 21340423]

約数ペア:

[(1, 21340423), (13, 1641571), (17, 1255319), (61, 349843), (221, 96563), (793, 26911), (1037, 20579), (1583, 13481)]