1091440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1949}}^1$

素因数の和:1969

約数の個数: 40

約数和(自身を含む): 2901600

約数和(自身を除く): 1810160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1949, 3898, 7796, 9745, 13643, 15592, 19490, 27286, 31184, 38980, 54572, 68215, 77960, 109144, 136430, 155920, 218288, 272860, 545720, 1091440]

約数ペア:

[(1, 1091440), (2, 545720), (4, 272860), (5, 218288), (7, 155920), (8, 136430), (10, 109144), (14, 77960), (16, 68215), (20, 54572), (28, 38980), (35, 31184), (40, 27286), (56, 19490), (70, 15592), (80, 13643), (112, 9745), (140, 7796), (280, 3898), (560, 1949)]