20510105

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 11665255

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 121, 145, 167, 203, 319, 385, 605, 835, 847, 1015, 1169, 1595, 1837, 2233, 3509, 4235, 4843, 5845, 9185, 11165, 12859, 17545, 20207, 24215, 24563, 33901, 53273, 64295, 101035, 122815, 141449, 169505, 266365, 372911, 586003, 707245, 1864555, 2930015, 4102021, 20510105]

約数ペア:

[(1, 20510105), (5, 4102021), (7, 2930015), (11, 1864555), (29, 707245), (35, 586003), (55, 372911), (77, 266365), (121, 169505), (145, 141449), (167, 122815), (203, 101035), (319, 64295), (385, 53273), (605, 33901), (835, 24563), (847, 24215), (1015, 20207), (1169, 17545), (1595, 12859), (1837, 11165), (2233, 9185), (3509, 5845), (4235, 4843)]