282920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 695520

約数和(自身を除く): 412600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 643, 1286, 2572, 3215, 5144, 6430, 7073, 12860, 14146, 25720, 28292, 35365, 56584, 70730, 141460, 282920]

約数ペア:

[(1, 282920), (2, 141460), (4, 70730), (5, 56584), (8, 35365), (10, 28292), (11, 25720), (20, 14146), (22, 12860), (40, 7073), (44, 6430), (55, 5144), (88, 3215), (110, 2572), (220, 1286), (440, 643)]