19803693

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 33988416

約数和(自身を除く): 14184723

約数列:

[1, 3, 7, 13, 21, 39, 43, 49, 91, 129, 147, 241, 273, 301, 559, 637, 723, 903, 1677, 1687, 1911, 2107, 3133, 3913, 5061, 6321, 9399, 10363, 11739, 11809, 21931, 27391, 31089, 35427, 65793, 72541, 82173, 134719, 153517, 217623, 404157, 460551, 507787, 943033, 1523361, 2829099, 6601231, 19803693]

約数ペア:

[(1, 19803693), (3, 6601231), (7, 2829099), (13, 1523361), (21, 943033), (39, 507787), (43, 460551), (49, 404157), (91, 217623), (129, 153517), (147, 134719), (241, 82173), (273, 72541), (301, 65793), (559, 35427), (637, 31089), (723, 27391), (903, 21931), (1677, 11809), (1687, 11739), (1911, 10363), (2107, 9399), (3133, 6321), (3913, 5061)]