20971688

素因数分解:

$2^3\times {\mathrm{571}}^1\times {\mathrm{4591}}^1$

素因数の和:5168

約数の個数: 16

約数和(自身を含む): 39399360

約数和(自身を除く): 18427672

約数列:

[1, 2, 4, 8, 571, 1142, 2284, 4568, 4591, 9182, 18364, 36728, 2621461, 5242922, 10485844, 20971688]

約数ペア:

[(1, 20971688), (2, 10485844), (4, 5242922), (8, 2621461), (571, 36728), (1142, 18364), (2284, 9182), (4568, 4591)]