7720280

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{751}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 17461440

約数和(自身を除く): 9741160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 751, 1028, 1285, 1502, 2056, 2570, 3004, 3755, 5140, 6008, 7510, 10280, 15020, 30040, 193007, 386014, 772028, 965035, 1544056, 1930070, 3860140, 7720280]

約数ペア:

[(1, 7720280), (2, 3860140), (4, 1930070), (5, 1544056), (8, 965035), (10, 772028), (20, 386014), (40, 193007), (257, 30040), (514, 15020), (751, 10280), (1028, 7510), (1285, 6008), (1502, 5140), (2056, 3755), (2570, 3004)]