51290840

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2633}}^1$

素因数の和:3131

約数の個数: 32

約数和(自身を含む): 115685280

約数和(自身を除く): 64394440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 2633, 3896, 4870, 5266, 9740, 10532, 13165, 19480, 21064, 26330, 52660, 105320, 1282271, 2564542, 5129084, 6411355, 10258168, 12822710, 25645420, 51290840]

約数ペア:

[(1, 51290840), (2, 25645420), (4, 12822710), (5, 10258168), (8, 6411355), (10, 5129084), (20, 2564542), (40, 1282271), (487, 105320), (974, 52660), (1948, 26330), (2435, 21064), (2633, 19480), (3896, 13165), (4870, 10532), (5266, 9740)]