19812508

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{907}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 35796992

約数和(自身を除く): 15984484

約数列:

[1, 2, 4, 43, 86, 127, 172, 254, 508, 907, 1814, 3628, 5461, 10922, 21844, 39001, 78002, 115189, 156004, 230378, 460756, 4953127, 9906254, 19812508]

約数ペア:

[(1, 19812508), (2, 9906254), (4, 4953127), (43, 460756), (86, 230378), (127, 156004), (172, 115189), (254, 78002), (508, 39001), (907, 21844), (1814, 10922), (3628, 5461)]