21154928

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10093}}^1$

素因数の和:10232

約数の個数: 20

約数和(自身を含む): 41304648

約数和(自身を除く): 20149720

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10093, 20186, 40372, 80744, 161488, 1322183, 2644366, 5288732, 10577464, 21154928]

約数ペア:

[(1, 21154928), (2, 10577464), (4, 5288732), (8, 2644366), (16, 1322183), (131, 161488), (262, 80744), (524, 40372), (1048, 20186), (2096, 10093)]