218042020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1557443}}^1$

素因数の和:1557459

約数の個数: 24

約数和(自身を含む): 523301184

約数和(自身を除く): 305259164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1557443, 3114886, 6229772, 7787215, 10902101, 15574430, 21804202, 31148860, 43608404, 54510505, 109021010, 218042020]

約数ペア:

[(1, 218042020), (2, 109021010), (4, 54510505), (5, 43608404), (7, 31148860), (10, 21804202), (14, 15574430), (20, 10902101), (28, 7787215), (35, 6229772), (70, 3114886), (140, 1557443)]