31920849

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 52296192

約数和(自身を除く): 20375343

約数列:

[1, 3, 9, 17, 23, 47, 51, 69, 141, 153, 193, 207, 391, 423, 579, 799, 1081, 1173, 1737, 2397, 3243, 3281, 3519, 4439, 7191, 9071, 9729, 9843, 13317, 18377, 27213, 29529, 39951, 55131, 75463, 81639, 154207, 165393, 208633, 226389, 462621, 625899, 679167, 1387863, 1877697, 3546761, 10640283, 31920849]

約数ペア:

[(1, 31920849), (3, 10640283), (9, 3546761), (17, 1877697), (23, 1387863), (47, 679167), (51, 625899), (69, 462621), (141, 226389), (153, 208633), (193, 165393), (207, 154207), (391, 81639), (423, 75463), (579, 55131), (799, 39951), (1081, 29529), (1173, 27213), (1737, 18377), (2397, 13317), (3243, 9843), (3281, 9729), (3519, 9071), (4439, 7191)]