21139688

素因数分解:

$2^3\times {\mathrm{431}}^1\times {\mathrm{6131}}^1$

素因数の和:6568

約数の個数: 16

約数和(自身を含む): 39735360

約数和(自身を除く): 18595672

約数列:

[1, 2, 4, 8, 431, 862, 1724, 3448, 6131, 12262, 24524, 49048, 2642461, 5284922, 10569844, 21139688]

約数ペア:

[(1, 21139688), (2, 10569844), (4, 5284922), (8, 2642461), (431, 49048), (862, 24524), (1724, 12262), (3448, 6131)]