81404721

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{683}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 134447040

約数和(自身を除く): 53042319

約数列:

[1, 3, 9, 17, 19, 41, 51, 57, 123, 153, 171, 323, 369, 683, 697, 779, 969, 2049, 2091, 2337, 2907, 6147, 6273, 7011, 11611, 12977, 13243, 28003, 34833, 38931, 39729, 84009, 104499, 116793, 119187, 220609, 252027, 476051, 532057, 661827, 1428153, 1596171, 1985481, 4284459, 4788513, 9044969, 27134907, 81404721]

約数ペア:

[(1, 81404721), (3, 27134907), (9, 9044969), (17, 4788513), (19, 4284459), (41, 1985481), (51, 1596171), (57, 1428153), (123, 661827), (153, 532057), (171, 476051), (323, 252027), (369, 220609), (683, 119187), (697, 116793), (779, 104499), (969, 84009), (2049, 39729), (2091, 38931), (2337, 34833), (2907, 28003), (6147, 13243), (6273, 12977), (7011, 11611)]