18664016

素因数分解:

$2^4\times 7^1\times {\mathrm{166643}}^1$

素因数の和:166658

約数の個数: 20

約数和(自身を含む): 41327712

約数和(自身を除く): 22663696

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 166643, 333286, 666572, 1166501, 1333144, 2333002, 2666288, 4666004, 9332008, 18664016]

約数ペア:

[(1, 18664016), (2, 9332008), (4, 4666004), (7, 2666288), (8, 2333002), (14, 1333144), (16, 1166501), (28, 666572), (56, 333286), (112, 166643)]