40821800

素因数分解:

$2^3\times 5^2\times {\mathrm{401}}^1\times {\mathrm{509}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 95334300

約数和(自身を除く): 54512500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 401, 509, 802, 1018, 1604, 2005, 2036, 2545, 3208, 4010, 4072, 5090, 8020, 10025, 10180, 12725, 16040, 20050, 20360, 25450, 40100, 50900, 80200, 101800, 204109, 408218, 816436, 1020545, 1632872, 2041090, 4082180, 5102725, 8164360, 10205450, 20410900, 40821800]

約数ペア:

[(1, 40821800), (2, 20410900), (4, 10205450), (5, 8164360), (8, 5102725), (10, 4082180), (20, 2041090), (25, 1632872), (40, 1020545), (50, 816436), (100, 408218), (200, 204109), (401, 101800), (509, 80200), (802, 50900), (1018, 40100), (1604, 25450), (2005, 20360), (2036, 20050), (2545, 16040), (3208, 12725), (4010, 10180), (4072, 10025), (5090, 8020)]