2540840

素因数分解:

$2^3\times 5^1\times {\mathrm{63521}}^1$

素因数の和:63532

約数の個数: 16

約数和(自身を含む): 5716980

約数和(自身を除く): 3176140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 63521, 127042, 254084, 317605, 508168, 635210, 1270420, 2540840]

約数ペア:

[(1, 2540840), (2, 1270420), (4, 635210), (5, 508168), (8, 317605), (10, 254084), (20, 127042), (40, 63521)]