1280654312

素因数分解:

$2^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{439}}^1\times {\mathrm{461}}^1$

素因数の和:1026

約数の個数: 64

約数和(自身を含む): 2780870400

約数和(自身を除く): 1500216088

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 113, 226, 439, 452, 461, 791, 878, 904, 922, 1582, 1756, 1844, 3073, 3164, 3227, 3512, 3688, 6146, 6328, 6454, 12292, 12908, 24584, 25816, 49607, 52093, 99214, 104186, 198428, 202379, 208372, 347249, 364651, 396856, 404758, 416744, 694498, 729302, 809516, 1388996, 1416653, 1458604, 1619032, 2777992, 2833306, 2917208, 5666612, 11333224, 22868827, 45737654, 91475308, 160081789, 182950616, 320163578, 640327156, 1280654312]

約数ペア:

[(1, 1280654312), (2, 640327156), (4, 320163578), (7, 182950616), (8, 160081789), (14, 91475308), (28, 45737654), (56, 22868827), (113, 11333224), (226, 5666612), (439, 2917208), (452, 2833306), (461, 2777992), (791, 1619032), (878, 1458604), (904, 1416653), (922, 1388996), (1582, 809516), (1756, 729302), (1844, 694498), (3073, 416744), (3164, 404758), (3227, 396856), (3512, 364651), (3688, 347249), (6146, 208372), (6328, 202379), (6454, 198428), (12292, 104186), (12908, 99214), (24584, 52093), (25816, 49607)]