18909247

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{1901}}^1$

素因数の和:1951

約数の個数: 16

約数和(自身を含む): 22824000

約数和(自身を除く): 3914753

約数列:

[1, 7, 29, 49, 203, 343, 1421, 1901, 9947, 13307, 55129, 93149, 385903, 652043, 2701321, 18909247]

約数ペア:

[(1, 18909247), (7, 2701321), (29, 652043), (49, 385903), (203, 93149), (343, 55129), (1421, 13307), (1901, 9947)]