20903008

素因数分解:

$2^5\times 7^2\times {\mathrm{13331}}^1$

素因数の和:13355

約数の個数: 36

約数和(自身を含む): 47875212

約数和(自身を除く): 26972204

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 13331, 26662, 53324, 93317, 106648, 186634, 213296, 373268, 426592, 653219, 746536, 1306438, 1493072, 2612876, 2986144, 5225752, 10451504, 20903008]

約数ペア:

[(1, 20903008), (2, 10451504), (4, 5225752), (7, 2986144), (8, 2612876), (14, 1493072), (16, 1306438), (28, 746536), (32, 653219), (49, 426592), (56, 373268), (98, 213296), (112, 186634), (196, 106648), (224, 93317), (392, 53324), (784, 26662), (1568, 13331)]