15871580

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1979}}^1$

素因数の和:2389

約数の個数: 24

約数和(自身を含む): 33430320

約数和(自身を除く): 17558740

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 1979, 2005, 3958, 4010, 7916, 8020, 9895, 19790, 39580, 793579, 1587158, 3174316, 3967895, 7935790, 15871580]

約数ペア:

[(1, 15871580), (2, 7935790), (4, 3967895), (5, 3174316), (10, 1587158), (20, 793579), (401, 39580), (802, 19790), (1604, 9895), (1979, 8020), (2005, 7916), (3958, 4010)]