20900898

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 46964736

約数和(自身を除く): 26063838

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 127, 223, 246, 254, 369, 381, 446, 669, 738, 762, 1143, 1338, 2007, 2286, 4014, 5207, 9143, 10414, 15621, 18286, 27429, 28321, 31242, 46863, 54858, 56642, 82287, 84963, 93726, 164574, 169926, 254889, 509778, 1161161, 2322322, 3483483, 6966966, 10450449, 20900898]

約数ペア:

[(1, 20900898), (2, 10450449), (3, 6966966), (6, 3483483), (9, 2322322), (18, 1161161), (41, 509778), (82, 254889), (123, 169926), (127, 164574), (223, 93726), (246, 84963), (254, 82287), (369, 56642), (381, 54858), (446, 46863), (669, 31242), (738, 28321), (762, 27429), (1143, 18286), (1338, 15621), (2007, 10414), (2286, 9143), (4014, 5207)]