20778758

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 42674688

約数和(自身を除く): 21895930

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 97, 107, 143, 154, 182, 194, 214, 286, 679, 749, 1001, 1067, 1177, 1261, 1358, 1391, 1498, 2002, 2134, 2354, 2522, 2782, 7469, 8239, 8827, 9737, 10379, 13871, 14938, 15301, 16478, 17654, 19474, 20758, 27742, 30602, 72653, 97097, 107107, 114169, 134927, 145306, 194194, 214214, 228338, 269854, 799183, 944489, 1484197, 1598366, 1888978, 2968394, 10389379, 20778758]

約数ペア:

[(1, 20778758), (2, 10389379), (7, 2968394), (11, 1888978), (13, 1598366), (14, 1484197), (22, 944489), (26, 799183), (77, 269854), (91, 228338), (97, 214214), (107, 194194), (143, 145306), (154, 134927), (182, 114169), (194, 107107), (214, 97097), (286, 72653), (679, 30602), (749, 27742), (1001, 20758), (1067, 19474), (1177, 17654), (1261, 16478), (1358, 15301), (1391, 14938), (1498, 13871), (2002, 10379), (2134, 9737), (2354, 8827), (2522, 8239), (2782, 7469)]