17620820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{125863}}^1$

素因数の和:125879

約数の個数: 24

約数和(自身を含む): 42290304

約数和(自身を除く): 24669484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 125863, 251726, 503452, 629315, 881041, 1258630, 1762082, 2517260, 3524164, 4405205, 8810410, 17620820]

約数ペア:

[(1, 17620820), (2, 8810410), (4, 4405205), (5, 3524164), (7, 2517260), (10, 1762082), (14, 1258630), (20, 881041), (28, 629315), (35, 503452), (70, 251726), (140, 125863)]