128285220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305441}}^1$

素因数の和:305460

約数の個数: 48

約数和(自身を含む): 410514048

約数和(自身を除く): 282228828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 305441, 610882, 916323, 1221764, 1527205, 1832646, 2138087, 3054410, 3665292, 4276174, 4581615, 6108820, 6414261, 8552348, 9163230, 10690435, 12828522, 18326460, 21380870, 25657044, 32071305, 42761740, 64142610, 128285220]

約数ペア:

[(1, 128285220), (2, 64142610), (3, 42761740), (4, 32071305), (5, 25657044), (6, 21380870), (7, 18326460), (10, 12828522), (12, 10690435), (14, 9163230), (15, 8552348), (20, 6414261), (21, 6108820), (28, 4581615), (30, 4276174), (35, 3665292), (42, 3054410), (60, 2138087), (70, 1832646), (84, 1527205), (105, 1221764), (140, 916323), (210, 610882), (420, 305441)]