28259720

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2749}}^1$

素因数の和:3017

約数の個数: 32

約数和(自身を含む): 63855000

約数和(自身を除く): 35595280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 2749, 5140, 5498, 10280, 10996, 13745, 21992, 27490, 54980, 109960, 706493, 1412986, 2825972, 3532465, 5651944, 7064930, 14129860, 28259720]

約数ペア:

[(1, 28259720), (2, 14129860), (4, 7064930), (5, 5651944), (8, 3532465), (10, 2825972), (20, 1412986), (40, 706493), (257, 109960), (514, 54980), (1028, 27490), (1285, 21992), (2056, 13745), (2570, 10996), (2749, 10280), (5140, 5498)]