12805880

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{823}}^1$

素因数の和:1223

約数の個数: 32

約数和(自身を含む): 28922400

約数和(自身を除く): 16116520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 823, 1556, 1646, 1945, 3112, 3292, 3890, 4115, 6584, 7780, 8230, 15560, 16460, 32920, 320147, 640294, 1280588, 1600735, 2561176, 3201470, 6402940, 12805880]

約数ペア:

[(1, 12805880), (2, 6402940), (4, 3201470), (5, 2561176), (8, 1600735), (10, 1280588), (20, 640294), (40, 320147), (389, 32920), (778, 16460), (823, 15560), (1556, 8230), (1646, 7780), (1945, 6584), (3112, 4115), (3292, 3890)]