21001666

素因数分解:

$2^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{2333}}^1$

素因数の和:2985

約数の個数: 16

約数和(自身を含む): 36074304

約数和(自身を除く): 15072638

約数列:

[1, 2, 7, 14, 643, 1286, 2333, 4501, 4666, 9002, 16331, 32662, 1500119, 3000238, 10500833, 21001666]

約数ペア:

[(1, 21001666), (2, 10500833), (7, 3000238), (14, 1500119), (643, 32662), (1286, 16331), (2333, 9002), (4501, 4666)]