51458020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28909}}^1$

素因数の和:29007

約数の個数: 24

約数和(自身を含む): 109279800

約数和(自身を除く): 57821780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 28909, 57818, 115636, 144545, 289090, 578180, 2572901, 5145802, 10291604, 12864505, 25729010, 51458020]

約数ペア:

[(1, 51458020), (2, 25729010), (4, 12864505), (5, 10291604), (10, 5145802), (20, 2572901), (89, 578180), (178, 289090), (356, 144545), (445, 115636), (890, 57818), (1780, 28909)]