138683020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{990593}}^1$

素因数の和:990609

約数の個数: 24

約数和(自身を含む): 332839584

約数和(自身を除く): 194156564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 990593, 1981186, 3962372, 4952965, 6934151, 9905930, 13868302, 19811860, 27736604, 34670755, 69341510, 138683020]

約数ペア:

[(1, 138683020), (2, 69341510), (4, 34670755), (5, 27736604), (7, 19811860), (10, 13868302), (14, 9905930), (20, 6934151), (28, 4952965), (35, 3962372), (70, 1981186), (140, 990593)]