25771960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 61300800

約数和(自身を除く): 35528840

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 109, 115, 184, 218, 230, 257, 436, 460, 514, 545, 872, 920, 1028, 1090, 1285, 2056, 2180, 2507, 2570, 4360, 5014, 5140, 5911, 10028, 10280, 11822, 12535, 20056, 23644, 25070, 28013, 29555, 47288, 50140, 56026, 59110, 100280, 112052, 118220, 140065, 224104, 236440, 280130, 560260, 644299, 1120520, 1288598, 2577196, 3221495, 5154392, 6442990, 12885980, 25771960]

約数ペア:

[(1, 25771960), (2, 12885980), (4, 6442990), (5, 5154392), (8, 3221495), (10, 2577196), (20, 1288598), (23, 1120520), (40, 644299), (46, 560260), (92, 280130), (109, 236440), (115, 224104), (184, 140065), (218, 118220), (230, 112052), (257, 100280), (436, 59110), (460, 56026), (514, 50140), (545, 47288), (872, 29555), (920, 28013), (1028, 25070), (1090, 23644), (1285, 20056), (2056, 12535), (2180, 11822), (2507, 10280), (2570, 10028), (4360, 5911), (5014, 5140)]