21279692

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 44900352

約数和(自身を除く): 23620660

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 173, 191, 322, 346, 382, 644, 692, 764, 1211, 1337, 2422, 2674, 3979, 4393, 4844, 5348, 7958, 8786, 15916, 17572, 27853, 30751, 33043, 55706, 61502, 66086, 111412, 123004, 132172, 231301, 462602, 759989, 925204, 1519978, 3039956, 5319923, 10639846, 21279692]

約数ペア:

[(1, 21279692), (2, 10639846), (4, 5319923), (7, 3039956), (14, 1519978), (23, 925204), (28, 759989), (46, 462602), (92, 231301), (161, 132172), (173, 123004), (191, 111412), (322, 66086), (346, 61502), (382, 55706), (644, 33043), (692, 30751), (764, 27853), (1211, 17572), (1337, 15916), (2422, 8786), (2674, 7958), (3979, 5348), (4393, 4844)]