81144280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1619}}^1$

素因数の和:1816

約数の個数: 64

約数和(自身を含む): 209952000

約数和(自身を除く): 128807720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 716, 895, 1253, 1432, 1619, 1790, 2506, 3238, 3580, 5012, 6265, 6476, 7160, 8095, 10024, 11333, 12530, 12952, 16190, 22666, 25060, 32380, 45332, 50120, 56665, 64760, 90664, 113330, 226660, 289801, 453320, 579602, 1159204, 1449005, 2028607, 2318408, 2898010, 4057214, 5796020, 8114428, 10143035, 11592040, 16228856, 20286070, 40572140, 81144280]

約数ペア:

[(1, 81144280), (2, 40572140), (4, 20286070), (5, 16228856), (7, 11592040), (8, 10143035), (10, 8114428), (14, 5796020), (20, 4057214), (28, 2898010), (35, 2318408), (40, 2028607), (56, 1449005), (70, 1159204), (140, 579602), (179, 453320), (280, 289801), (358, 226660), (716, 113330), (895, 90664), (1253, 64760), (1432, 56665), (1619, 50120), (1790, 45332), (2506, 32380), (3238, 25060), (3580, 22666), (5012, 16190), (6265, 12952), (6476, 12530), (7160, 11333), (8095, 10024)]