21276268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{619}}^1\times {\mathrm{661}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 40223120

約数和(自身を除く): 18946852

約数列:

[1, 2, 4, 13, 26, 52, 619, 661, 1238, 1322, 2476, 2644, 8047, 8593, 16094, 17186, 32188, 34372, 409159, 818318, 1636636, 5319067, 10638134, 21276268]

約数ペア:

[(1, 21276268), (2, 10638134), (4, 5319067), (13, 1636636), (26, 818318), (52, 409159), (619, 34372), (661, 32188), (1238, 17186), (1322, 16094), (2476, 8593), (2644, 8047)]