40406120

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1571}}^1$

素因数の和:2225

約数の個数: 32

約数和(自身を含む): 91113120

約数和(自身を除く): 50707000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 1571, 2572, 3142, 3215, 5144, 6284, 6430, 7855, 12568, 12860, 15710, 25720, 31420, 62840, 1010153, 2020306, 4040612, 5050765, 8081224, 10101530, 20203060, 40406120]

約数ペア:

[(1, 40406120), (2, 20203060), (4, 10101530), (5, 8081224), (8, 5050765), (10, 4040612), (20, 2020306), (40, 1010153), (643, 62840), (1286, 31420), (1571, 25720), (2572, 15710), (3142, 12860), (3215, 12568), (5144, 7855), (6284, 6430)]