21291516

素因数分解:

$2^2\times 3^2\times {\mathrm{591431}}^1$

素因数の和:591441

約数の個数: 18

約数和(自身を含む): 53820312

約数和(自身を除く): 32528796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 591431, 1182862, 1774293, 2365724, 3548586, 5322879, 7097172, 10645758, 21291516]

約数ペア:

[(1, 21291516), (2, 10645758), (3, 7097172), (4, 5322879), (6, 3548586), (9, 2365724), (12, 1774293), (18, 1182862), (36, 591431)]