19401440

素因数分解:

$2^5\times 5^1\times {\mathrm{121259}}^1$

素因数の和:121274

約数の個数: 24

約数和(自身を含む): 45836280

約数和(自身を除く): 26434840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 121259, 242518, 485036, 606295, 970072, 1212590, 1940144, 2425180, 3880288, 4850360, 9700720, 19401440]

約数ペア:

[(1, 19401440), (2, 9700720), (4, 4850360), (5, 3880288), (8, 2425180), (10, 1940144), (16, 1212590), (20, 970072), (32, 606295), (40, 485036), (80, 242518), (160, 121259)]