28239729

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{6197}}^1$

素因数の和:6245

約数の個数: 24

約数和(自身を含む): 45220608

約数和(自身を除く): 16980879

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 6197, 18591, 43379, 130137, 192107, 303653, 576321, 910959, 1344749, 4034247, 9413243, 28239729]

約数ペア:

[(1, 28239729), (3, 9413243), (7, 4034247), (21, 1344749), (31, 910959), (49, 576321), (93, 303653), (147, 192107), (217, 130137), (651, 43379), (1519, 18591), (4557, 6197)]