21299457

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1\times {\mathrm{617}}^1$

素因数の和:968

約数の個数: 16

約数和(自身を含む): 29308032

約数和(自身を除く): 8008575

約数列:

[1, 3, 37, 111, 311, 617, 933, 1851, 11507, 22829, 34521, 68487, 191887, 575661, 7099819, 21299457]

約数ペア:

[(1, 21299457), (3, 7099819), (37, 575661), (111, 191887), (311, 68487), (617, 34521), (933, 22829), (1851, 11507)]