21058730

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3907}}^1$

素因数の和:3939

約数の個数: 48

約数和(自身を含む): 48115296

約数和(自身を除く): 27056566

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3907, 5390, 7814, 19535, 27349, 39070, 42977, 54698, 85954, 136745, 191443, 214885, 273490, 300839, 382886, 429770, 601678, 957215, 1504195, 1914430, 2105873, 3008390, 4211746, 10529365, 21058730]

約数ペア:

[(1, 21058730), (2, 10529365), (5, 4211746), (7, 3008390), (10, 2105873), (11, 1914430), (14, 1504195), (22, 957215), (35, 601678), (49, 429770), (55, 382886), (70, 300839), (77, 273490), (98, 214885), (110, 191443), (154, 136745), (245, 85954), (385, 54698), (490, 42977), (539, 39070), (770, 27349), (1078, 19535), (2695, 7814), (3907, 5390)]