28777240

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1759}}^1$

素因数の和:2179

約数の個数: 32

約数和(自身を含む): 64944000

約数和(自身を除く): 36166760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 1759, 2045, 3272, 3518, 4090, 7036, 8180, 8795, 14072, 16360, 17590, 35180, 70360, 719431, 1438862, 2877724, 3597155, 5755448, 7194310, 14388620, 28777240]

約数ペア:

[(1, 28777240), (2, 14388620), (4, 7194310), (5, 5755448), (8, 3597155), (10, 2877724), (20, 1438862), (40, 719431), (409, 70360), (818, 35180), (1636, 17590), (1759, 16360), (2045, 14072), (3272, 8795), (3518, 8180), (4090, 7036)]