201921220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{99961}}^1$

素因数の和:100071

約数の個数: 24

約数和(自身を含む): 428237208

約数和(自身を除く): 226315988

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 99961, 199922, 399844, 499805, 999610, 1999220, 10096061, 20192122, 40384244, 50480305, 100960610, 201921220]

約数ペア:

[(1, 201921220), (2, 100960610), (4, 50480305), (5, 40384244), (10, 20192122), (20, 10096061), (101, 1999220), (202, 999610), (404, 499805), (505, 399844), (1010, 199922), (2020, 99961)]