21308984

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20333}}^1$

素因数の和:20470

約数の個数: 16

約数和(自身を含む): 40261320

約数和(自身を除く): 18952336

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20333, 40666, 81332, 162664, 2663623, 5327246, 10654492, 21308984]

約数ペア:

[(1, 21308984), (2, 10654492), (4, 5327246), (8, 2663623), (131, 162664), (262, 81332), (524, 40666), (1048, 20333)]