21740270

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9749}}^1$

素因数の和:9979

約数の個数: 16

約数和(自身を含む): 39312000

約数和(自身を除く): 17571730

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9749, 19498, 48745, 97490, 2174027, 4348054, 10870135, 21740270]

約数ペア:

[(1, 21740270), (2, 10870135), (5, 4348054), (10, 2174027), (223, 97490), (446, 48745), (1115, 19498), (2230, 9749)]