19788328

素因数分解:

$2^3\times 7^1\times {\mathrm{449}}^1\times {\mathrm{787}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 42552000

約数和(自身を除く): 22763672

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 449, 787, 898, 1574, 1796, 3143, 3148, 3592, 5509, 6286, 6296, 11018, 12572, 22036, 25144, 44072, 353363, 706726, 1413452, 2473541, 2826904, 4947082, 9894164, 19788328]

約数ペア:

[(1, 19788328), (2, 9894164), (4, 4947082), (7, 2826904), (8, 2473541), (14, 1413452), (28, 706726), (56, 353363), (449, 44072), (787, 25144), (898, 22036), (1574, 12572), (1796, 11018), (3143, 6296), (3148, 6286), (3592, 5509)]