20404976

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8123}}^1$

素因数の和:8288

約数の個数: 20

約数和(自身を含む): 39791352

約数和(自身を除く): 19386376

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8123, 16246, 32492, 64984, 129968, 1275311, 2550622, 5101244, 10202488, 20404976]

約数ペア:

[(1, 20404976), (2, 10202488), (4, 5101244), (8, 2550622), (16, 1275311), (157, 129968), (314, 64984), (628, 32492), (1256, 16246), (2512, 8123)]