208020729

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{21121}}^1$

素因数の和:21205

約数の個数: 24

約数和(自身を含む): 327475488

約数和(自身を除く): 119454759

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 3283, 9849, 21121, 63363, 147847, 443541, 1034929, 1415107, 3104787, 4245321, 9905749, 29717247, 69340243, 208020729]

約数ペア:

[(1, 208020729), (3, 69340243), (7, 29717247), (21, 9905749), (49, 4245321), (67, 3104787), (147, 1415107), (201, 1034929), (469, 443541), (1407, 147847), (3283, 63363), (9849, 21121)]