25437080

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 61205760

約数和(自身を除く): 35768680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 643, 860, 920, 989, 1286, 1720, 1978, 2572, 3215, 3956, 4945, 5144, 6430, 7912, 9890, 12860, 14789, 19780, 25720, 27649, 29578, 39560, 55298, 59156, 73945, 110596, 118312, 138245, 147890, 221192, 276490, 295780, 552980, 591560, 635927, 1105960, 1271854, 2543708, 3179635, 5087416, 6359270, 12718540, 25437080]

約数ペア:

[(1, 25437080), (2, 12718540), (4, 6359270), (5, 5087416), (8, 3179635), (10, 2543708), (20, 1271854), (23, 1105960), (40, 635927), (43, 591560), (46, 552980), (86, 295780), (92, 276490), (115, 221192), (172, 147890), (184, 138245), (215, 118312), (230, 110596), (344, 73945), (430, 59156), (460, 55298), (643, 39560), (860, 29578), (920, 27649), (989, 25720), (1286, 19780), (1720, 14789), (1978, 12860), (2572, 9890), (3215, 7912), (3956, 6430), (4945, 5144)]