205505960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{1301}}^1$

素因数の和:1682

約数の個数: 64

約数和(自身を含む): 506217600

約数和(自身を除く): 300711640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 359, 440, 718, 1301, 1436, 1795, 2602, 2872, 3590, 3949, 5204, 6505, 7180, 7898, 10408, 13010, 14311, 14360, 15796, 19745, 26020, 28622, 31592, 39490, 52040, 57244, 71555, 78980, 114488, 143110, 157960, 286220, 467059, 572440, 934118, 1868236, 2335295, 3736472, 4670590, 5137649, 9341180, 10275298, 18682360, 20550596, 25688245, 41101192, 51376490, 102752980, 205505960]

約数ペア:

[(1, 205505960), (2, 102752980), (4, 51376490), (5, 41101192), (8, 25688245), (10, 20550596), (11, 18682360), (20, 10275298), (22, 9341180), (40, 5137649), (44, 4670590), (55, 3736472), (88, 2335295), (110, 1868236), (220, 934118), (359, 572440), (440, 467059), (718, 286220), (1301, 157960), (1436, 143110), (1795, 114488), (2602, 78980), (2872, 71555), (3590, 57244), (3949, 52040), (5204, 39490), (6505, 31592), (7180, 28622), (7898, 26020), (10408, 19745), (13010, 15796), (14311, 14360)]