2568591640

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{249863}}^1$

素因数の和:250131

約数の個数: 32

約数和(自身を含む): 5801842080

約数和(自身を除く): 3233250440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 249863, 499726, 999452, 1249315, 1998904, 2498630, 4997260, 9994520, 64214791, 128429582, 256859164, 321073955, 513718328, 642147910, 1284295820, 2568591640]

約数ペア:

[(1, 2568591640), (2, 1284295820), (4, 642147910), (5, 513718328), (8, 321073955), (10, 256859164), (20, 128429582), (40, 64214791), (257, 9994520), (514, 4997260), (1028, 2498630), (1285, 1998904), (2056, 1249315), (2570, 999452), (5140, 499726), (10280, 249863)]