19850649

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 15630951

約数列:

[1, 3, 7, 13, 19, 21, 39, 43, 57, 89, 91, 129, 133, 247, 267, 273, 301, 399, 559, 623, 741, 817, 903, 1157, 1677, 1691, 1729, 1869, 2451, 3471, 3827, 3913, 5073, 5187, 5719, 8099, 10621, 11481, 11739, 11837, 17157, 21983, 24297, 26789, 31863, 35511, 49751, 65949, 72713, 74347, 80367, 149253, 153881, 218139, 223041, 348257, 461643, 508991, 945269, 1044771, 1526973, 2835807, 6616883, 19850649]

約数ペア:

[(1, 19850649), (3, 6616883), (7, 2835807), (13, 1526973), (19, 1044771), (21, 945269), (39, 508991), (43, 461643), (57, 348257), (89, 223041), (91, 218139), (129, 153881), (133, 149253), (247, 80367), (267, 74347), (273, 72713), (301, 65949), (399, 49751), (559, 35511), (623, 31863), (741, 26789), (817, 24297), (903, 21983), (1157, 17157), (1677, 11837), (1691, 11739), (1729, 11481), (1869, 10621), (2451, 8099), (3471, 5719), (3827, 5187), (3913, 5073)]