20742020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79777}}^1$

素因数の和:79799

約数の個数: 24

約数和(自身を含む): 46909464

約数和(自身を除く): 26167444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79777, 159554, 319108, 398885, 797770, 1037101, 1595540, 2074202, 4148404, 5185505, 10371010, 20742020]

約数ペア:

[(1, 20742020), (2, 10371010), (4, 5185505), (5, 4148404), (10, 2074202), (13, 1595540), (20, 1037101), (26, 797770), (52, 398885), (65, 319108), (130, 159554), (260, 79777)]