27978951

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^4\times {\mathrm{13}}^1$

素因数の和:74

約数の個数: 60

約数和(自身を含む): 51407160

約数和(自身を除く): 23428209

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 121, 143, 147, 231, 273, 363, 429, 539, 637, 847, 1001, 1331, 1573, 1617, 1911, 2541, 3003, 3993, 4719, 5929, 7007, 9317, 11011, 14641, 17303, 17787, 21021, 27951, 33033, 43923, 51909, 65219, 77077, 102487, 121121, 190333, 195657, 231231, 307461, 363363, 570999, 717409, 847847, 1332331, 2152227, 2543541, 3996993, 9326317, 27978951]

約数ペア:

[(1, 27978951), (3, 9326317), (7, 3996993), (11, 2543541), (13, 2152227), (21, 1332331), (33, 847847), (39, 717409), (49, 570999), (77, 363363), (91, 307461), (121, 231231), (143, 195657), (147, 190333), (231, 121121), (273, 102487), (363, 77077), (429, 65219), (539, 51909), (637, 43923), (847, 33033), (1001, 27951), (1331, 21021), (1573, 17787), (1617, 17303), (1911, 14641), (2541, 11011), (3003, 9317), (3993, 7007), (4719, 5929)]