278102020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1986443}}^1$

素因数の和:1986459

約数の個数: 24

約数和(自身を含む): 667445184

約数和(自身を除く): 389343164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1986443, 3972886, 7945772, 9932215, 13905101, 19864430, 27810202, 39728860, 55620404, 69525505, 139051010, 278102020]

約数ペア:

[(1, 278102020), (2, 139051010), (4, 69525505), (5, 55620404), (7, 39728860), (10, 27810202), (14, 19864430), (20, 13905101), (28, 9932215), (35, 7945772), (70, 3972886), (140, 1986443)]