28093660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 69521760

約数和(自身を除く): 41428100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 263, 436, 490, 526, 545, 763, 980, 1052, 1090, 1315, 1526, 1841, 2180, 2630, 3052, 3682, 3815, 5260, 5341, 7364, 7630, 9205, 10682, 12887, 15260, 18410, 21364, 25774, 26705, 28667, 36820, 51548, 53410, 57334, 64435, 106820, 114668, 128870, 143335, 200669, 257740, 286670, 401338, 573340, 802676, 1003345, 1404683, 2006690, 2809366, 4013380, 5618732, 7023415, 14046830, 28093660]

約数ペア:

[(1, 28093660), (2, 14046830), (4, 7023415), (5, 5618732), (7, 4013380), (10, 2809366), (14, 2006690), (20, 1404683), (28, 1003345), (35, 802676), (49, 573340), (70, 401338), (98, 286670), (109, 257740), (140, 200669), (196, 143335), (218, 128870), (245, 114668), (263, 106820), (436, 64435), (490, 57334), (526, 53410), (545, 51548), (763, 36820), (980, 28667), (1052, 26705), (1090, 25774), (1315, 21364), (1526, 18410), (1841, 15260), (2180, 12887), (2630, 10682), (3052, 9205), (3682, 7630), (3815, 7364), (5260, 5341)]