19820991

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 27141120

約数和(自身を除く): 7320129

約数列:

[1, 3, 59, 113, 177, 339, 991, 2973, 6667, 20001, 58469, 111983, 175407, 335949, 6606997, 19820991]

約数ペア:

[(1, 19820991), (3, 6606997), (59, 335949), (113, 175407), (177, 111983), (339, 58469), (991, 20001), (2973, 6667)]