18810057

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47143}}^1$

素因数の和:47172

約数の個数: 16

約数和(自身を含む): 30172160

約数和(自身を除く): 11362103

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47143, 141429, 330001, 895717, 990003, 2687151, 6270019, 18810057]

約数ペア:

[(1, 18810057), (3, 6270019), (7, 2687151), (19, 990003), (21, 895717), (57, 330001), (133, 141429), (399, 47143)]