200997980

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{20981}}^1$

素因数の和:21469

約数の個数: 24

約数和(自身を含む): 422997120

約数和(自身を除く): 221999140

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2395, 4790, 9580, 20981, 41962, 83924, 104905, 209810, 419620, 10049899, 20099798, 40199596, 50249495, 100498990, 200997980]

約数ペア:

[(1, 200997980), (2, 100498990), (4, 50249495), (5, 40199596), (10, 20099798), (20, 10049899), (479, 419620), (958, 209810), (1916, 104905), (2395, 83924), (4790, 41962), (9580, 20981)]