19899621

素因数分解:

$3^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 33920000

約数和(自身を除く): 14020379

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 211, 499, 633, 1477, 1497, 1899, 3493, 4431, 4491, 5697, 10479, 13293, 13473, 31437, 39879, 94311, 105289, 315867, 737023, 947601, 2211069, 2842803, 6633207, 19899621]

約数ペア:

[(1, 19899621), (3, 6633207), (7, 2842803), (9, 2211069), (21, 947601), (27, 737023), (63, 315867), (189, 105289), (211, 94311), (499, 39879), (633, 31437), (1477, 13473), (1497, 13293), (1899, 10479), (3493, 5697), (4431, 4491)]