2778440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{9923}}^1$

素因数の和:9941

約数の個数: 32

約数和(自身を含む): 7145280

約数和(自身を除く): 4366840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 9923, 19846, 39692, 49615, 69461, 79384, 99230, 138922, 198460, 277844, 347305, 396920, 555688, 694610, 1389220, 2778440]

約数ペア:

[(1, 2778440), (2, 1389220), (4, 694610), (5, 555688), (7, 396920), (8, 347305), (10, 277844), (14, 198460), (20, 138922), (28, 99230), (35, 79384), (40, 69461), (56, 49615), (70, 39692), (140, 19846), (280, 9923)]