640959009

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{90187}}^1$

素因数の和:90316

約数の個数: 16

約数和(自身を含む): 900436992

約数和(自身を除く): 259477983

約数列:

[1, 3, 23, 69, 103, 309, 2369, 7107, 90187, 270561, 2074301, 6222903, 9289261, 27867783, 213653003, 640959009]

約数ペア:

[(1, 640959009), (3, 213653003), (23, 27867783), (69, 9289261), (103, 6222903), (309, 2074301), (2369, 270561), (7107, 90187)]