7216720

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{263}}^1$

素因数の和:297

約数の個数: 80

約数和(自身を含む): 19641600

約数和(自身を除く): 12424880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 263, 280, 343, 392, 490, 526, 560, 686, 784, 980, 1052, 1315, 1372, 1715, 1841, 1960, 2104, 2630, 2744, 3430, 3682, 3920, 4208, 5260, 5488, 6860, 7364, 9205, 10520, 12887, 13720, 14728, 18410, 21040, 25774, 27440, 29456, 36820, 51548, 64435, 73640, 90209, 103096, 128870, 147280, 180418, 206192, 257740, 360836, 451045, 515480, 721672, 902090, 1030960, 1443344, 1804180, 3608360, 7216720]

約数ペア:

[(1, 7216720), (2, 3608360), (4, 1804180), (5, 1443344), (7, 1030960), (8, 902090), (10, 721672), (14, 515480), (16, 451045), (20, 360836), (28, 257740), (35, 206192), (40, 180418), (49, 147280), (56, 128870), (70, 103096), (80, 90209), (98, 73640), (112, 64435), (140, 51548), (196, 36820), (245, 29456), (263, 27440), (280, 25774), (343, 21040), (392, 18410), (490, 14728), (526, 13720), (560, 12887), (686, 10520), (784, 9205), (980, 7364), (1052, 6860), (1315, 5488), (1372, 5260), (1715, 4208), (1841, 3920), (1960, 3682), (2104, 3430), (2630, 2744)]