28778607

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 49795200

約数和(自身を除く): 21016593

約数列:

[1, 3, 9, 11, 13, 33, 39, 59, 99, 117, 143, 177, 379, 429, 531, 649, 767, 1137, 1287, 1947, 2301, 3411, 4169, 4927, 5841, 6903, 8437, 12507, 14781, 22361, 25311, 37521, 44343, 54197, 67083, 75933, 162591, 201249, 245971, 290693, 487773, 737913, 872079, 2213739, 2616237, 3197623, 9592869, 28778607]

約数ペア:

[(1, 28778607), (3, 9592869), (9, 3197623), (11, 2616237), (13, 2213739), (33, 872079), (39, 737913), (59, 487773), (99, 290693), (117, 245971), (143, 201249), (177, 162591), (379, 75933), (429, 67083), (531, 54197), (649, 44343), (767, 37521), (1137, 25311), (1287, 22361), (1947, 14781), (2301, 12507), (3411, 8437), (4169, 6903), (4927, 5841)]