20410900

素因数分解:

$2^2\times 5^2\times {\mathrm{401}}^1\times {\mathrm{509}}^1$

素因数の和:924

約数の個数: 36

約数和(自身を含む): 44489340

約数和(自身を除く): 24078440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 401, 509, 802, 1018, 1604, 2005, 2036, 2545, 4010, 5090, 8020, 10025, 10180, 12725, 20050, 25450, 40100, 50900, 204109, 408218, 816436, 1020545, 2041090, 4082180, 5102725, 10205450, 20410900]

約数ペア:

[(1, 20410900), (2, 10205450), (4, 5102725), (5, 4082180), (10, 2041090), (20, 1020545), (25, 816436), (50, 408218), (100, 204109), (401, 50900), (509, 40100), (802, 25450), (1018, 20050), (1604, 12725), (2005, 10180), (2036, 10025), (2545, 8020), (4010, 5090)]