20508516

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{839}}^1$

素因数の和:953

約数の個数: 72

約数和(自身を含む): 59928960

約数和(自身を除く): 39420444

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 97, 126, 194, 252, 291, 388, 582, 679, 839, 873, 1164, 1358, 1678, 1746, 2037, 2517, 2716, 3356, 3492, 4074, 5034, 5873, 6111, 7551, 8148, 10068, 11746, 12222, 15102, 17619, 23492, 24444, 30204, 35238, 52857, 70476, 81383, 105714, 162766, 211428, 244149, 325532, 488298, 569681, 732447, 976596, 1139362, 1464894, 1709043, 2278724, 2929788, 3418086, 5127129, 6836172, 10254258, 20508516]

約数ペア:

[(1, 20508516), (2, 10254258), (3, 6836172), (4, 5127129), (6, 3418086), (7, 2929788), (9, 2278724), (12, 1709043), (14, 1464894), (18, 1139362), (21, 976596), (28, 732447), (36, 569681), (42, 488298), (63, 325532), (84, 244149), (97, 211428), (126, 162766), (194, 105714), (252, 81383), (291, 70476), (388, 52857), (582, 35238), (679, 30204), (839, 24444), (873, 23492), (1164, 17619), (1358, 15102), (1678, 12222), (1746, 11746), (2037, 10068), (2517, 8148), (2716, 7551), (3356, 6111), (3492, 5873), (4074, 5034)]