21495166

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12689}}^1$

素因数の和:12720

約数の個数: 24

約数和(自身を含む): 40506480

約数和(自身を除く): 19011314

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12689, 25378, 88823, 139579, 177646, 279158, 977053, 1535369, 1954106, 3070738, 10747583, 21495166]

約数ペア:

[(1, 21495166), (2, 10747583), (7, 3070738), (11, 1954106), (14, 1535369), (22, 977053), (77, 279158), (121, 177646), (154, 139579), (242, 88823), (847, 25378), (1694, 12689)]