19721488

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53591}}^1$

素因数の和:53622

約数の個数: 20

約数和(自身を含む): 39872448

約数和(自身を除く): 20150960

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 53591, 107182, 214364, 428728, 857456, 1232593, 2465186, 4930372, 9860744, 19721488]

約数ペア:

[(1, 19721488), (2, 9860744), (4, 4930372), (8, 2465186), (16, 1232593), (23, 857456), (46, 428728), (92, 214364), (184, 107182), (368, 53591)]