20777770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{577}}^1$

素因数の和:874

約数の個数: 32

約数和(自身を含む): 40492368

約数和(自身を除く): 19714598

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 277, 554, 577, 1154, 1385, 2770, 2885, 3601, 5770, 7202, 7501, 15002, 18005, 36010, 37505, 75010, 159829, 319658, 799145, 1598290, 2077777, 4155554, 10388885, 20777770]

約数ペア:

[(1, 20777770), (2, 10388885), (5, 4155554), (10, 2077777), (13, 1598290), (26, 799145), (65, 319658), (130, 159829), (277, 75010), (554, 37505), (577, 36010), (1154, 18005), (1385, 15002), (2770, 7501), (2885, 7202), (3601, 5770)]