20512222015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1549}}^1\times {\mathrm{1877}}^1$

素因数の和:3531

約数の個数: 32

約数和(自身を含む): 26407684800

約数和(自身を除く): 5895462785

約数列:

[1, 5, 17, 83, 85, 415, 1411, 1549, 1877, 7055, 7745, 9385, 26333, 31909, 128567, 131665, 155791, 159545, 642835, 778955, 2185639, 2648447, 2907473, 10928195, 13242235, 14537365, 49427041, 241320259, 247135205, 1206601295, 4102444403, 20512222015]

約数ペア:

[(1, 20512222015), (5, 4102444403), (17, 1206601295), (83, 247135205), (85, 241320259), (415, 49427041), (1411, 14537365), (1549, 13242235), (1877, 10928195), (7055, 2907473), (7745, 2648447), (9385, 2185639), (26333, 778955), (31909, 642835), (128567, 159545), (131665, 155791)]