55440040

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5393}}^1$

素因数の和:5661

約数の個数: 32

約数和(自身を含む): 125248680

約数和(自身を除く): 69808640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 5393, 10280, 10786, 21572, 26965, 43144, 53930, 107860, 215720, 1386001, 2772002, 5544004, 6930005, 11088008, 13860010, 27720020, 55440040]

約数ペア:

[(1, 55440040), (2, 27720020), (4, 13860010), (5, 11088008), (8, 6930005), (10, 5544004), (20, 2772002), (40, 1386001), (257, 215720), (514, 107860), (1028, 53930), (1285, 43144), (2056, 26965), (2570, 21572), (5140, 10786), (5393, 10280)]