20641136

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4591}}^1$

素因数の和:4880

約数の個数: 20

約数和(自身を含む): 40143264

約数和(自身を除く): 19502128

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4591, 9182, 18364, 36728, 73456, 1290071, 2580142, 5160284, 10320568, 20641136]

約数ペア:

[(1, 20641136), (2, 10320568), (4, 5160284), (8, 2580142), (16, 1290071), (281, 73456), (562, 36728), (1124, 18364), (2248, 9182), (4496, 4591)]