19828208

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53881}}^1$

素因数の和:53912

約数の個数: 20

約数和(自身を含む): 40088208

約数和(自身を除く): 20260000

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 53881, 107762, 215524, 431048, 862096, 1239263, 2478526, 4957052, 9914104, 19828208]

約数ペア:

[(1, 19828208), (2, 9914104), (4, 4957052), (8, 2478526), (16, 1239263), (23, 862096), (46, 431048), (92, 215524), (184, 107762), (368, 53881)]