21686266

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{12197}}^1$

素因数の和:12333

約数の個数: 16

約数和(自身を含む): 37472256

約数和(自身を除く): 15785990

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 12197, 24394, 85379, 170758, 1549019, 3098038, 10843133, 21686266]

約数ペア:

[(1, 21686266), (2, 10843133), (7, 3098038), (14, 1549019), (127, 170758), (254, 85379), (889, 24394), (1778, 12197)]