20798260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2803}}^1$

素因数の和:2872

約数の個数: 48

約数和(自身を含む): 50875776

約数和(自身を除く): 30077516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 2803, 3710, 5606, 7420, 11212, 14015, 19621, 28030, 39242, 56060, 78484, 98105, 148559, 196210, 297118, 392420, 594236, 742795, 1039913, 1485590, 2079826, 2971180, 4159652, 5199565, 10399130, 20798260]

約数ペア:

[(1, 20798260), (2, 10399130), (4, 5199565), (5, 4159652), (7, 2971180), (10, 2079826), (14, 1485590), (20, 1039913), (28, 742795), (35, 594236), (53, 392420), (70, 297118), (106, 196210), (140, 148559), (212, 98105), (265, 78484), (371, 56060), (530, 39242), (742, 28030), (1060, 19621), (1484, 14015), (1855, 11212), (2803, 7420), (3710, 5606)]