20985664

素因数分解:

$2^6\times 7^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:495

約数の個数: 56

約数和(自身を含む): 48077120

約数和(自身を除く): 27091456

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 139, 224, 278, 337, 448, 556, 674, 973, 1112, 1348, 1946, 2224, 2359, 2696, 3892, 4448, 4718, 5392, 7784, 8896, 9436, 10784, 15568, 18872, 21568, 31136, 37744, 46843, 62272, 75488, 93686, 150976, 187372, 327901, 374744, 655802, 749488, 1311604, 1498976, 2623208, 2997952, 5246416, 10492832, 20985664]

約数ペア:

[(1, 20985664), (2, 10492832), (4, 5246416), (7, 2997952), (8, 2623208), (14, 1498976), (16, 1311604), (28, 749488), (32, 655802), (56, 374744), (64, 327901), (112, 187372), (139, 150976), (224, 93686), (278, 75488), (337, 62272), (448, 46843), (556, 37744), (674, 31136), (973, 21568), (1112, 18872), (1348, 15568), (1946, 10784), (2224, 9436), (2359, 8896), (2696, 7784), (3892, 5392), (4448, 4718)]