666988460

素因数分解:

$2^2\times 5^1\times {\mathrm{8501}}^1\times {\mathrm{3923}}^1$

素因数の和:12433

約数の個数: 24

約数和(自身を含む): 1401197616

約数和(自身を除く): 734209156

約数列:

[1, 2, 4, 5, 10, 20, 3923, 7846, 8501, 15692, 17002, 19615, 34004, 39230, 42505, 78460, 85010, 170020, 33349423, 66698846, 133397692, 166747115, 333494230, 666988460]

約数ペア:

[(1, 666988460), (2, 333494230), (4, 166747115), (5, 133397692), (10, 66698846), (20, 33349423), (3923, 170020), (7846, 85010), (8501, 78460), (15692, 42505), (17002, 39230), (19615, 34004)]