21070280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6841}}^1$

素因数の和:6870

約数の個数: 64

約数和(自身を含む): 59114880

約数和(自身を除く): 38044600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6841, 13682, 27364, 34205, 47887, 54728, 68410, 75251, 95774, 136820, 150502, 191548, 239435, 273640, 301004, 376255, 383096, 478870, 526757, 602008, 752510, 957740, 1053514, 1505020, 1915480, 2107028, 2633785, 3010040, 4214056, 5267570, 10535140, 21070280]

約数ペア:

[(1, 21070280), (2, 10535140), (4, 5267570), (5, 4214056), (7, 3010040), (8, 2633785), (10, 2107028), (11, 1915480), (14, 1505020), (20, 1053514), (22, 957740), (28, 752510), (35, 602008), (40, 526757), (44, 478870), (55, 383096), (56, 376255), (70, 301004), (77, 273640), (88, 239435), (110, 191548), (140, 150502), (154, 136820), (220, 95774), (280, 75251), (308, 68410), (385, 54728), (440, 47887), (616, 34205), (770, 27364), (1540, 13682), (3080, 6841)]