20287155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10169}}^1$

素因数の和:10203

約数の個数: 32

約数和(自身を含む): 39052800

約数和(自身を除く): 18765645

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10169, 30507, 50845, 71183, 152535, 193211, 213549, 355915, 579633, 966055, 1067745, 1352477, 2898165, 4057431, 6762385, 20287155]

約数ペア:

[(1, 20287155), (3, 6762385), (5, 4057431), (7, 2898165), (15, 1352477), (19, 1067745), (21, 966055), (35, 579633), (57, 355915), (95, 213549), (105, 193211), (133, 152535), (285, 71183), (399, 50845), (665, 30507), (1995, 10169)]