4112720

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:623

約数の個数: 40

約数和(自身を含む): 9675720

約数和(自身を除く): 5563000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 509, 808, 1010, 1018, 1616, 2020, 2036, 2545, 4040, 4072, 5090, 8080, 8144, 10180, 20360, 40720, 51409, 102818, 205636, 257045, 411272, 514090, 822544, 1028180, 2056360, 4112720]

約数ペア:

[(1, 4112720), (2, 2056360), (4, 1028180), (5, 822544), (8, 514090), (10, 411272), (16, 257045), (20, 205636), (40, 102818), (80, 51409), (101, 40720), (202, 20360), (404, 10180), (505, 8144), (509, 8080), (808, 5090), (1010, 4072), (1018, 4040), (1616, 2545), (2020, 2036)]