28207377

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4013}}^1$

素因数の和:4101

約数の個数: 24

約数和(自身を含む): 45085248

約数和(自身を除く): 16877871

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 4013, 7029, 12039, 36117, 44143, 132429, 284923, 397287, 854769, 2564307, 3134153, 9402459, 28207377]

約数ペア:

[(1, 28207377), (3, 9402459), (9, 3134153), (11, 2564307), (33, 854769), (71, 397287), (99, 284923), (213, 132429), (639, 44143), (781, 36117), (2343, 12039), (4013, 7029)]