28290640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1031}}^1$

素因数の和:1065

約数の個数: 80

約数和(自身を含む): 76780800

約数和(自身を除く): 48490160

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, 280, 343, 392, 490, 560, 686, 784, 980, 1031, 1372, 1715, 1960, 2062, 2744, 3430, 3920, 4124, 5155, 5488, 6860, 7217, 8248, 10310, 13720, 14434, 16496, 20620, 27440, 28868, 36085, 41240, 50519, 57736, 72170, 82480, 101038, 115472, 144340, 202076, 252595, 288680, 353633, 404152, 505190, 577360, 707266, 808304, 1010380, 1414532, 1768165, 2020760, 2829064, 3536330, 4041520, 5658128, 7072660, 14145320, 28290640]

約数ペア:

[(1, 28290640), (2, 14145320), (4, 7072660), (5, 5658128), (7, 4041520), (8, 3536330), (10, 2829064), (14, 2020760), (16, 1768165), (20, 1414532), (28, 1010380), (35, 808304), (40, 707266), (49, 577360), (56, 505190), (70, 404152), (80, 353633), (98, 288680), (112, 252595), (140, 202076), (196, 144340), (245, 115472), (280, 101038), (343, 82480), (392, 72170), (490, 57736), (560, 50519), (686, 41240), (784, 36085), (980, 28868), (1031, 27440), (1372, 20620), (1715, 16496), (1960, 14434), (2062, 13720), (2744, 10310), (3430, 8248), (3920, 7217), (4124, 6860), (5155, 5488)]