81778347

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2633}}^1$

素因数の和:2692

約数の個数: 48

約数和(自身を含む): 147925440

約数和(自身を除く): 66147093

約数列:

[1, 3, 7, 9, 17, 21, 29, 51, 63, 87, 119, 153, 203, 261, 357, 493, 609, 1071, 1479, 1827, 2633, 3451, 4437, 7899, 10353, 18431, 23697, 31059, 44761, 55293, 76357, 134283, 165879, 229071, 313327, 402849, 534499, 687213, 939981, 1298069, 1603497, 2819943, 3894207, 4810491, 9086483, 11682621, 27259449, 81778347]

約数ペア:

[(1, 81778347), (3, 27259449), (7, 11682621), (9, 9086483), (17, 4810491), (21, 3894207), (29, 2819943), (51, 1603497), (63, 1298069), (87, 939981), (119, 687213), (153, 534499), (203, 402849), (261, 313327), (357, 229071), (493, 165879), (609, 134283), (1071, 76357), (1479, 55293), (1827, 44761), (2633, 31059), (3451, 23697), (4437, 18431), (7899, 10353)]