51780057

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 81948672

約数和(自身を除く): 30168615

約数列:

[1, 3, 7, 21, 37, 103, 111, 259, 309, 647, 721, 777, 1941, 2163, 3811, 4529, 11433, 13587, 23939, 26677, 66641, 71817, 80031, 167573, 199923, 466487, 502719, 1399461, 2465717, 7397151, 17260019, 51780057]

約数ペア:

[(1, 51780057), (3, 17260019), (7, 7397151), (21, 2465717), (37, 1399461), (103, 502719), (111, 466487), (259, 199923), (309, 167573), (647, 80031), (721, 71817), (777, 66641), (1941, 26677), (2163, 23939), (3811, 13587), (4529, 11433)]