21807639

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5867}}^1$

素因数の和:5939

約数の個数: 24

約数和(自身を含む): 36616320

約数和(自身を除く): 14808681

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5867, 17601, 41069, 52803, 123207, 346153, 369621, 1038459, 2423071, 3115377, 7269213, 21807639]

約数ペア:

[(1, 21807639), (3, 7269213), (7, 3115377), (9, 2423071), (21, 1038459), (59, 369621), (63, 346153), (177, 123207), (413, 52803), (531, 41069), (1239, 17601), (3717, 5867)]