21778722

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1361}}^1$

素因数の和:1503

約数の個数: 48

約数和(自身を含む): 54392832

約数和(自身を除く): 32614110

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 127, 254, 381, 762, 889, 1143, 1361, 1778, 2286, 2667, 2722, 4083, 5334, 8001, 8166, 9527, 12249, 16002, 19054, 24498, 28581, 57162, 85743, 171486, 172847, 345694, 518541, 1037082, 1209929, 1555623, 2419858, 3111246, 3629787, 7259574, 10889361, 21778722]

約数ペア:

[(1, 21778722), (2, 10889361), (3, 7259574), (6, 3629787), (7, 3111246), (9, 2419858), (14, 1555623), (18, 1209929), (21, 1037082), (42, 518541), (63, 345694), (126, 172847), (127, 171486), (254, 85743), (381, 57162), (762, 28581), (889, 24498), (1143, 19054), (1361, 16002), (1778, 12249), (2286, 9527), (2667, 8166), (2722, 8001), (4083, 5334)]