19982831

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 22619520

約数和(自身を除く): 2636689

約数列:

[1, 11, 43, 83, 473, 509, 913, 3569, 5599, 21887, 39259, 42247, 240757, 464717, 1816621, 19982831]

約数ペア:

[(1, 19982831), (11, 1816621), (43, 464717), (83, 240757), (473, 42247), (509, 39259), (913, 21887), (3569, 5599)]