20499544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{449}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 21080456

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 439, 449, 878, 898, 1756, 1796, 3512, 3592, 5707, 5837, 11414, 11674, 22828, 23348, 45656, 46696, 197111, 394222, 788444, 1576888, 2562443, 5124886, 10249772, 20499544]

約数ペア:

[(1, 20499544), (2, 10249772), (4, 5124886), (8, 2562443), (13, 1576888), (26, 788444), (52, 394222), (104, 197111), (439, 46696), (449, 45656), (878, 23348), (898, 22828), (1756, 11674), (1796, 11414), (3512, 5837), (3592, 5707)]