28387480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{433}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 70308000

約数和(自身を除く): 41920520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 433, 440, 596, 745, 866, 1192, 1490, 1639, 1732, 2165, 2980, 3278, 3464, 4330, 4763, 5960, 6556, 8195, 8660, 9526, 13112, 16390, 17320, 19052, 23815, 32780, 38104, 47630, 64517, 65560, 95260, 129034, 190520, 258068, 322585, 516136, 645170, 709687, 1290340, 1419374, 2580680, 2838748, 3548435, 5677496, 7096870, 14193740, 28387480]

約数ペア:

[(1, 28387480), (2, 14193740), (4, 7096870), (5, 5677496), (8, 3548435), (10, 2838748), (11, 2580680), (20, 1419374), (22, 1290340), (40, 709687), (44, 645170), (55, 516136), (88, 322585), (110, 258068), (149, 190520), (220, 129034), (298, 95260), (433, 65560), (440, 64517), (596, 47630), (745, 38104), (866, 32780), (1192, 23815), (1490, 19052), (1639, 17320), (1732, 16390), (2165, 13112), (2980, 9526), (3278, 8660), (3464, 8195), (4330, 6556), (4763, 5960)]