20009728

素因数分解:

$2^8\times {\mathrm{78163}}^1$

素因数の和:78179

約数の個数: 18

約数和(自身を含む): 39941804

約数和(自身を除く): 19932076

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 78163, 156326, 312652, 625304, 1250608, 2501216, 5002432, 10004864, 20009728]

約数ペア:

[(1, 20009728), (2, 10004864), (4, 5002432), (8, 2501216), (16, 1250608), (32, 625304), (64, 312652), (128, 156326), (256, 78163)]