28216377

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6491}}^1$

素因数の和:6530

約数の個数: 32

約数和(自身を含む): 49858560

約数和(自身を除く): 21642183

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 6491, 19473, 45437, 58419, 136311, 149293, 175257, 408933, 447879, 1045051, 1226799, 1343637, 3135153, 4030911, 9405459, 28216377]

約数ペア:

[(1, 28216377), (3, 9405459), (7, 4030911), (9, 3135153), (21, 1343637), (23, 1226799), (27, 1045051), (63, 447879), (69, 408933), (161, 175257), (189, 149293), (207, 136311), (483, 58419), (621, 45437), (1449, 19473), (4347, 6491)]