51931760

素因数分解:

$2^4\times 5^1\times {\mathrm{649147}}^1$

素因数の和:649160

約数の個数: 20

約数和(自身を含む): 120741528

約数和(自身を除く): 68809768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 649147, 1298294, 2596588, 3245735, 5193176, 6491470, 10386352, 12982940, 25965880, 51931760]

約数ペア:

[(1, 51931760), (2, 25965880), (4, 12982940), (5, 10386352), (8, 6491470), (10, 5193176), (16, 3245735), (20, 2596588), (40, 1298294), (80, 649147)]