2789420

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{661}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 5894448

約数和(自身を除く): 3105028

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 661, 844, 1055, 1322, 2110, 2644, 3305, 4220, 6610, 13220, 139471, 278942, 557884, 697355, 1394710, 2789420]

約数ペア:

[(1, 2789420), (2, 1394710), (4, 697355), (5, 557884), (10, 278942), (20, 139471), (211, 13220), (422, 6610), (661, 4220), (844, 3305), (1055, 2644), (1322, 2110)]