20379820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12277}}^1$

素因数の和:12369

約数の個数: 24

約数和(自身を含む): 43316784

約数和(自身を除く): 22936964

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12277, 24554, 49108, 61385, 122770, 245540, 1018991, 2037982, 4075964, 5094955, 10189910, 20379820]

約数ペア:

[(1, 20379820), (2, 10189910), (4, 5094955), (5, 4075964), (10, 2037982), (20, 1018991), (83, 245540), (166, 122770), (332, 61385), (415, 49108), (830, 24554), (1660, 12277)]