19901312

素因数分解:

$2^7\times {\mathrm{181}}^1\times {\mathrm{859}}^1$

素因数の和:1054

約数の個数: 32

約数和(自身を含む): 39912600

約数和(自身を除く): 20011288

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 181, 362, 724, 859, 1448, 1718, 2896, 3436, 5792, 6872, 11584, 13744, 23168, 27488, 54976, 109952, 155479, 310958, 621916, 1243832, 2487664, 4975328, 9950656, 19901312]

約数ペア:

[(1, 19901312), (2, 9950656), (4, 4975328), (8, 2487664), (16, 1243832), (32, 621916), (64, 310958), (128, 155479), (181, 109952), (362, 54976), (724, 27488), (859, 23168), (1448, 13744), (1718, 11584), (2896, 6872), (3436, 5792)]