12864080

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^2$

素因数の和:815

約数の個数: 30

約数和(自身を含む): 29983758

約数和(自身を除く): 17119678

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1604, 2005, 3208, 4010, 6416, 8020, 16040, 32080, 160801, 321602, 643204, 804005, 1286408, 1608010, 2572816, 3216020, 6432040, 12864080]

約数ペア:

[(1, 12864080), (2, 6432040), (4, 3216020), (5, 2572816), (8, 1608010), (10, 1286408), (16, 804005), (20, 643204), (40, 321602), (80, 160801), (401, 32080), (802, 16040), (1604, 8020), (2005, 6416), (3208, 4010)]