81642978

素因数分解:

$2^1\times 3^4\times {\mathrm{503969}}^1$

素因数の和:503983

約数の個数: 20

約数和(自身を含む): 182941110

約数和(自身を除く): 101298132

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 503969, 1007938, 1511907, 3023814, 4535721, 9071442, 13607163, 27214326, 40821489, 81642978]

約数ペア:

[(1, 81642978), (2, 40821489), (3, 27214326), (6, 13607163), (9, 9071442), (18, 4535721), (27, 3023814), (54, 1511907), (81, 1007938), (162, 503969)]