405342020

素因数分解:

$2^2\times 5^1\times {\mathrm{20267101}}^1$

素因数の和:20267110

約数の個数: 12

約数和(自身を含む): 851218284

約数和(自身を除く): 445876264

約数列:

[1, 2, 4, 5, 10, 20, 20267101, 40534202, 81068404, 101335505, 202671010, 405342020]

約数ペア:

[(1, 405342020), (2, 202671010), (4, 101335505), (5, 81068404), (10, 40534202), (20, 20267101)]