21442239

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2909}}^1$

素因数の和:2941

約数の個数: 40

約数和(自身を含む): 39436320

約数和(自身を除く): 17994081

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2909, 7371, 8727, 20363, 26181, 37817, 61089, 78543, 113451, 183267, 235629, 264719, 340353, 549801, 794157, 1021059, 1649403, 2382471, 3063177, 7147413, 21442239]

約数ペア:

[(1, 21442239), (3, 7147413), (7, 3063177), (9, 2382471), (13, 1649403), (21, 1021059), (27, 794157), (39, 549801), (63, 340353), (81, 264719), (91, 235629), (117, 183267), (189, 113451), (273, 78543), (351, 61089), (567, 37817), (819, 26181), (1053, 20363), (2457, 8727), (2909, 7371)]