21185620976

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7834919}}^1$

素因数の和:7834953

約数の個数: 30

約数和(自身を含む): 44447501160

約数和(自身を除く): 23261880184

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7834919, 15669838, 31339676, 62679352, 101853947, 125358704, 203707894, 407415788, 814831576, 1324101311, 1629663152, 2648202622, 5296405244, 10592810488, 21185620976]

約数ペア:

[(1, 21185620976), (2, 10592810488), (4, 5296405244), (8, 2648202622), (13, 1629663152), (16, 1324101311), (26, 814831576), (52, 407415788), (104, 203707894), (169, 125358704), (208, 101853947), (338, 62679352), (676, 31339676), (1352, 15669838), (2704, 7834919)]