21560210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{308003}}^1$

素因数の和:308017

約数の個数: 16

約数和(自身を含む): 44352576

約数和(自身を除く): 22792366

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 308003, 616006, 1540015, 2156021, 3080030, 4312042, 10780105, 21560210]

約数ペア:

[(1, 21560210), (2, 10780105), (5, 4312042), (7, 3080030), (10, 2156021), (14, 1540015), (35, 616006), (70, 308003)]