21105872

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{24889}}^1$

素因数の和:24950

約数の個数: 20

約数和(自身を含む): 41665860

約数和(自身を除く): 20559988

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 24889, 49778, 99556, 199112, 398224, 1319117, 2638234, 5276468, 10552936, 21105872]

約数ペア:

[(1, 21105872), (2, 10552936), (4, 5276468), (8, 2638234), (16, 1319117), (53, 398224), (106, 199112), (212, 99556), (424, 49778), (848, 24889)]