1287867920

素因数分解:

$2^4\times 5^1\times {\mathrm{1223}}^1\times {\mathrm{13163}}^1$

素因数の和:14399

約数の個数: 40

約数和(自身を含む): 2996968896

約数和(自身を除く): 1709100976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1223, 2446, 4892, 6115, 9784, 12230, 13163, 19568, 24460, 26326, 48920, 52652, 65815, 97840, 105304, 131630, 210608, 263260, 526520, 1053040, 16098349, 32196698, 64393396, 80491745, 128786792, 160983490, 257573584, 321966980, 643933960, 1287867920]

約数ペア:

[(1, 1287867920), (2, 643933960), (4, 321966980), (5, 257573584), (8, 160983490), (10, 128786792), (16, 80491745), (20, 64393396), (40, 32196698), (80, 16098349), (1223, 1053040), (2446, 526520), (4892, 263260), (6115, 210608), (9784, 131630), (12230, 105304), (13163, 97840), (19568, 65815), (24460, 52652), (26326, 48920)]