21276035

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:200

約数の個数: 32

約数和(自身を含む): 29514240

約数和(自身を除く): 8238205

約数列:

[1, 5, 11, 23, 55, 115, 121, 139, 253, 605, 695, 1265, 1331, 1529, 2783, 3197, 6655, 7645, 13915, 15985, 16819, 30613, 35167, 84095, 153065, 175835, 185009, 386837, 925045, 1934185, 4255207, 21276035]

約数ペア:

[(1, 21276035), (5, 4255207), (11, 1934185), (23, 925045), (55, 386837), (115, 185009), (121, 175835), (139, 153065), (253, 84095), (605, 35167), (695, 30613), (1265, 16819), (1331, 15985), (1529, 13915), (2783, 7645), (3197, 6655)]