21840494

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1949}}^1$

素因数の和:2395

約数の個数: 16

約数和(自身を含む): 35380800

約数和(自身を除く): 13540306

約数列:

[1, 2, 13, 26, 431, 862, 1949, 3898, 5603, 11206, 25337, 50674, 840019, 1680038, 10920247, 21840494]

約数ペア:

[(1, 21840494), (2, 10920247), (13, 1680038), (26, 840019), (431, 50674), (862, 25337), (1949, 11206), (3898, 5603)]