19952972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{1087}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 37744896

約数和(自身を除く): 17791924

約数列:

[1, 2, 4, 13, 26, 52, 353, 706, 1087, 1412, 2174, 4348, 4589, 9178, 14131, 18356, 28262, 56524, 383711, 767422, 1534844, 4988243, 9976486, 19952972]

約数ペア:

[(1, 19952972), (2, 9976486), (4, 4988243), (13, 1534844), (26, 767422), (52, 383711), (353, 56524), (706, 28262), (1087, 18356), (1412, 14131), (2174, 9178), (4348, 4589)]