21239230

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51803}}^1$

素因数の和:51851

約数の個数: 16

約数和(自身を含む): 39163824

約数和(自身を除く): 17924594

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51803, 103606, 259015, 518030, 2123923, 4247846, 10619615, 21239230]

約数ペア:

[(1, 21239230), (2, 10619615), (5, 4247846), (10, 2123923), (41, 518030), (82, 259015), (205, 103606), (410, 51803)]