21712370

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52957}}^1$

素因数の和:53005

約数の個数: 16

約数和(自身を含む): 40036248

約数和(自身を除く): 18323878

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52957, 105914, 264785, 529570, 2171237, 4342474, 10856185, 21712370]

約数ペア:

[(1, 21712370), (2, 10856185), (5, 4342474), (10, 2171237), (41, 529570), (82, 264785), (205, 105914), (410, 52957)]