20089971

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 36080640

約数和(自身を除く): 15990669

約数列:

[1, 3, 9, 11, 17, 23, 27, 33, 51, 69, 99, 153, 173, 187, 207, 253, 297, 391, 459, 519, 561, 621, 759, 1173, 1557, 1683, 1903, 2277, 2941, 3519, 3979, 4301, 4671, 5049, 5709, 6831, 8823, 10557, 11937, 12903, 17127, 26469, 32351, 35811, 38709, 43769, 51381, 67643, 79407, 97053, 107433, 116127, 131307, 202929, 291159, 393921, 608787, 744073, 873477, 1181763, 1826361, 2232219, 6696657, 20089971]

約数ペア:

[(1, 20089971), (3, 6696657), (9, 2232219), (11, 1826361), (17, 1181763), (23, 873477), (27, 744073), (33, 608787), (51, 393921), (69, 291159), (99, 202929), (153, 131307), (173, 116127), (187, 107433), (207, 97053), (253, 79407), (297, 67643), (391, 51381), (459, 43769), (519, 38709), (561, 35811), (621, 32351), (759, 26469), (1173, 17127), (1557, 12903), (1683, 11937), (1903, 10557), (2277, 8823), (2941, 6831), (3519, 5709), (3979, 5049), (4301, 4671)]