25405720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{5827}}^1$

素因数の和:5947

約数の個数: 32

約数和(自身を含む): 57697200

約数和(自身を除く): 32291480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 5827, 11654, 23308, 29135, 46616, 58270, 116540, 233080, 635143, 1270286, 2540572, 3175715, 5081144, 6351430, 12702860, 25405720]

約数ペア:

[(1, 25405720), (2, 12702860), (4, 6351430), (5, 5081144), (8, 3175715), (10, 2540572), (20, 1270286), (40, 635143), (109, 233080), (218, 116540), (436, 58270), (545, 46616), (872, 29135), (1090, 23308), (2180, 11654), (4360, 5827)]