19012420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{977}}^1$

素因数の和:1132

約数の個数: 48

約数和(自身を含む): 46005120

約数和(自身を除く): 26992700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 977, 1390, 1946, 1954, 2780, 3892, 3908, 4865, 4885, 6839, 9730, 9770, 13678, 19460, 19540, 27356, 34195, 68390, 135803, 136780, 271606, 543212, 679015, 950621, 1358030, 1901242, 2716060, 3802484, 4753105, 9506210, 19012420]

約数ペア:

[(1, 19012420), (2, 9506210), (4, 4753105), (5, 3802484), (7, 2716060), (10, 1901242), (14, 1358030), (20, 950621), (28, 679015), (35, 543212), (70, 271606), (139, 136780), (140, 135803), (278, 68390), (556, 34195), (695, 27356), (973, 19540), (977, 19460), (1390, 13678), (1946, 9770), (1954, 9730), (2780, 6839), (3892, 4885), (3908, 4865)]