81991833

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20879}}^1$

素因数の和:20917

約数の個数: 32

約数和(自身を含む): 144322560

約数和(自身を除く): 62330727

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 20879, 62637, 146153, 229669, 354943, 438459, 689007, 1064829, 1607683, 2484601, 3904373, 4823049, 7453803, 11713119, 27330611, 81991833]

約数ペア:

[(1, 81991833), (3, 27330611), (7, 11713119), (11, 7453803), (17, 4823049), (21, 3904373), (33, 2484601), (51, 1607683), (77, 1064829), (119, 689007), (187, 438459), (231, 354943), (357, 229669), (561, 146153), (1309, 62637), (3927, 20879)]