19778356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1223}}^1$

素因数の和:1551

約数の個数: 24

約数和(自身を含む): 37425024

約数和(自身を除く): 17646668

約数列:

[1, 2, 4, 13, 26, 52, 311, 622, 1223, 1244, 2446, 4043, 4892, 8086, 15899, 16172, 31798, 63596, 380353, 760706, 1521412, 4944589, 9889178, 19778356]

約数ペア:

[(1, 19778356), (2, 9889178), (4, 4944589), (13, 1521412), (26, 760706), (52, 380353), (311, 63596), (622, 31798), (1223, 16172), (1244, 15899), (2446, 8086), (4043, 4892)]