20985296

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{4987}}^1$

素因数の和:5258

約数の個数: 20

約数和(自身を含む): 40821792

約数和(自身を除く): 19836496

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 4987, 9974, 19948, 39896, 79792, 1311581, 2623162, 5246324, 10492648, 20985296]

約数ペア:

[(1, 20985296), (2, 10492648), (4, 5246324), (8, 2623162), (16, 1311581), (263, 79792), (526, 39896), (1052, 19948), (2104, 9974), (4208, 4987)]