21065172

素因数分解:

$2^2\times 3^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 50473920

約数和(自身を除く): 29408748

約数列:

[1, 2, 3, 4, 6, 12, 73, 139, 146, 173, 219, 278, 292, 346, 417, 438, 519, 556, 692, 834, 876, 1038, 1668, 2076, 10147, 12629, 20294, 24047, 25258, 30441, 37887, 40588, 48094, 50516, 60882, 72141, 75774, 96188, 121764, 144282, 151548, 288564, 1755431, 3510862, 5266293, 7021724, 10532586, 21065172]

約数ペア:

[(1, 21065172), (2, 10532586), (3, 7021724), (4, 5266293), (6, 3510862), (12, 1755431), (73, 288564), (139, 151548), (146, 144282), (173, 121764), (219, 96188), (278, 75774), (292, 72141), (346, 60882), (417, 50516), (438, 48094), (519, 40588), (556, 37887), (692, 30441), (834, 25258), (876, 24047), (1038, 20294), (1668, 12629), (2076, 10147)]