20645128

素因数分解:

$2^3\times 7^1\times {\mathrm{173}}^1\times {\mathrm{2131}}^1$

素因数の和:2317

約数の個数: 32

約数和(自身を含む): 44516160

約数和(自身を除く): 23871032

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 173, 346, 692, 1211, 1384, 2131, 2422, 4262, 4844, 8524, 9688, 14917, 17048, 29834, 59668, 119336, 368663, 737326, 1474652, 2580641, 2949304, 5161282, 10322564, 20645128]

約数ペア:

[(1, 20645128), (2, 10322564), (4, 5161282), (7, 2949304), (8, 2580641), (14, 1474652), (28, 737326), (56, 368663), (173, 119336), (346, 59668), (692, 29834), (1211, 17048), (1384, 14917), (2131, 9688), (2422, 8524), (4262, 4844)]