21002091

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{1231}}^1$

素因数の和:1303

約数の個数: 24

約数和(自身を含む): 31460352

約数和(自身を除く): 10458261

約数列:

[1, 3, 11, 33, 47, 121, 141, 363, 517, 1231, 1551, 3693, 5687, 13541, 17061, 40623, 57857, 148951, 173571, 446853, 636427, 1909281, 7000697, 21002091]

約数ペア:

[(1, 21002091), (3, 7000697), (11, 1909281), (33, 636427), (47, 446853), (121, 173571), (141, 148951), (363, 57857), (517, 40623), (1231, 17061), (1551, 13541), (3693, 5687)]