25721241

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1327}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 42835968

約数和(自身を除く): 17114727

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1327, 1491, 2769, 3981, 6461, 9289, 17251, 19383, 27867, 51753, 94217, 120757, 282651, 362271, 659519, 1224821, 1978557, 3674463, 8573747, 25721241]

約数ペア:

[(1, 25721241), (3, 8573747), (7, 3674463), (13, 1978557), (21, 1224821), (39, 659519), (71, 362271), (91, 282651), (213, 120757), (273, 94217), (497, 51753), (923, 27867), (1327, 19383), (1491, 17251), (2769, 9289), (3981, 6461)]