20695840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1069}}^1$

素因数の和:1106

約数の個数: 72

約数和(自身を含む): 53793180

約数和(自身を除く): 33097340

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1069, 1210, 1760, 1936, 2138, 2420, 3872, 4276, 4840, 5345, 8552, 9680, 10690, 11759, 17104, 19360, 21380, 23518, 34208, 42760, 47036, 58795, 85520, 94072, 117590, 129349, 171040, 188144, 235180, 258698, 376288, 470360, 517396, 646745, 940720, 1034792, 1293490, 1881440, 2069584, 2586980, 4139168, 5173960, 10347920, 20695840]

約数ペア:

[(1, 20695840), (2, 10347920), (4, 5173960), (5, 4139168), (8, 2586980), (10, 2069584), (11, 1881440), (16, 1293490), (20, 1034792), (22, 940720), (32, 646745), (40, 517396), (44, 470360), (55, 376288), (80, 258698), (88, 235180), (110, 188144), (121, 171040), (160, 129349), (176, 117590), (220, 94072), (242, 85520), (352, 58795), (440, 47036), (484, 42760), (605, 34208), (880, 23518), (968, 21380), (1069, 19360), (1210, 17104), (1760, 11759), (1936, 10690), (2138, 9680), (2420, 8552), (3872, 5345), (4276, 4840)]