21390064

素因数分解:

$2^4\times {\mathrm{337}}^1\times {\mathrm{3967}}^1$

素因数の和:4312

約数の個数: 20

約数和(自身を含む): 41576704

約数和(自身を除く): 20186640

約数列:

[1, 2, 4, 8, 16, 337, 674, 1348, 2696, 3967, 5392, 7934, 15868, 31736, 63472, 1336879, 2673758, 5347516, 10695032, 21390064]

約数ペア:

[(1, 21390064), (2, 10695032), (4, 5347516), (8, 2673758), (16, 1336879), (337, 63472), (674, 31736), (1348, 15868), (2696, 7934), (3967, 5392)]