19503771

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 30670848

約数和(自身を除く): 11167077

約数列:

[1, 3, 7, 21, 71, 103, 127, 213, 309, 381, 497, 721, 889, 1491, 2163, 2667, 7313, 9017, 13081, 21939, 27051, 39243, 51191, 63119, 91567, 153573, 189357, 274701, 928751, 2786253, 6501257, 19503771]

約数ペア:

[(1, 19503771), (3, 6501257), (7, 2786253), (21, 928751), (71, 274701), (103, 189357), (127, 153573), (213, 91567), (309, 63119), (381, 51191), (497, 39243), (721, 27051), (889, 21939), (1491, 13081), (2163, 9017), (2667, 7313)]