21097659

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{467}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 31606848

約数和(自身を除く): 10509189

約数列:

[1, 3, 11, 33, 37, 111, 407, 467, 1221, 1369, 1401, 4107, 5137, 15059, 15411, 17279, 45177, 51837, 190069, 570207, 639323, 1917969, 7032553, 21097659]

約数ペア:

[(1, 21097659), (3, 7032553), (11, 1917969), (33, 639323), (37, 570207), (111, 190069), (407, 51837), (467, 45177), (1221, 17279), (1369, 15411), (1401, 15059), (4107, 5137)]