19917648

素因数分解:

$2^4\times 3^2\times {\mathrm{157}}^1\times {\mathrm{881}}^1$

素因数の和:1052

約数の個数: 60

約数和(自身を含む): 56160468

約数和(自身を除く): 36242820

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 157, 314, 471, 628, 881, 942, 1256, 1413, 1762, 1884, 2512, 2643, 2826, 3524, 3768, 5286, 5652, 7048, 7536, 7929, 10572, 11304, 14096, 15858, 21144, 22608, 31716, 42288, 63432, 126864, 138317, 276634, 414951, 553268, 829902, 1106536, 1244853, 1659804, 2213072, 2489706, 3319608, 4979412, 6639216, 9958824, 19917648]

約数ペア:

[(1, 19917648), (2, 9958824), (3, 6639216), (4, 4979412), (6, 3319608), (8, 2489706), (9, 2213072), (12, 1659804), (16, 1244853), (18, 1106536), (24, 829902), (36, 553268), (48, 414951), (72, 276634), (144, 138317), (157, 126864), (314, 63432), (471, 42288), (628, 31716), (881, 22608), (942, 21144), (1256, 15858), (1413, 14096), (1762, 11304), (1884, 10572), (2512, 7929), (2643, 7536), (2826, 7048), (3524, 5652), (3768, 5286)]