51125680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9001}}^1$

素因数の和:9085

約数の個数: 40

約数和(自身を含む): 120554784

約数和(自身を除く): 69429104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 9001, 18002, 36004, 45005, 72008, 90010, 144016, 180020, 360040, 639071, 720080, 1278142, 2556284, 3195355, 5112568, 6390710, 10225136, 12781420, 25562840, 51125680]

約数ペア:

[(1, 51125680), (2, 25562840), (4, 12781420), (5, 10225136), (8, 6390710), (10, 5112568), (16, 3195355), (20, 2556284), (40, 1278142), (71, 720080), (80, 639071), (142, 360040), (284, 180020), (355, 144016), (568, 90010), (710, 72008), (1136, 45005), (1420, 36004), (2840, 18002), (5680, 9001)]