866196440

素因数分解:

$2^3\times 5^1\times {\mathrm{3251}}^1\times {\mathrm{6661}}^1$

素因数の和:9923

約数の個数: 32

約数和(自身を含む): 1949834160

約数和(自身を除く): 1083637720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3251, 6502, 6661, 13004, 13322, 16255, 26008, 26644, 32510, 33305, 53288, 65020, 66610, 130040, 133220, 266440, 21654911, 43309822, 86619644, 108274555, 173239288, 216549110, 433098220, 866196440]

約数ペア:

[(1, 866196440), (2, 433098220), (4, 216549110), (5, 173239288), (8, 108274555), (10, 86619644), (20, 43309822), (40, 21654911), (3251, 266440), (6502, 133220), (6661, 130040), (13004, 66610), (13322, 65020), (16255, 53288), (26008, 33305), (26644, 32510)]