68690020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{490643}}^1$

素因数の和:490659

約数の個数: 24

約数和(自身を含む): 164856384

約数和(自身を除く): 96166364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 490643, 981286, 1962572, 2453215, 3434501, 4906430, 6869002, 9812860, 13738004, 17172505, 34345010, 68690020]

約数ペア:

[(1, 68690020), (2, 34345010), (4, 17172505), (5, 13738004), (7, 9812860), (10, 6869002), (14, 4906430), (20, 3434501), (28, 2453215), (35, 1962572), (70, 981286), (140, 490643)]