20405210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{291503}}^1$

素因数の和:291517

約数の個数: 16

約数和(自身を含む): 41976576

約数和(自身を除く): 21571366

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 291503, 583006, 1457515, 2040521, 2915030, 4081042, 10202605, 20405210]

約数ペア:

[(1, 20405210), (2, 10202605), (5, 4081042), (7, 2915030), (10, 2040521), (14, 1457515), (35, 583006), (70, 291503)]