21851824

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71881}}^1$

素因数の和:71908

約数の個数: 20

約数和(自身を含む): 44566840

約数和(自身を除く): 22715016

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71881, 143762, 287524, 575048, 1150096, 1365739, 2731478, 5462956, 10925912, 21851824]

約数ペア:

[(1, 21851824), (2, 10925912), (4, 5462956), (8, 2731478), (16, 1365739), (19, 1150096), (38, 575048), (76, 287524), (152, 143762), (304, 71881)]