21081968

素因数分解:

$2^4\times {\mathrm{823}}^1\times {\mathrm{1601}}^1$

素因数の和:2432

約数の個数: 20

約数和(自身を含む): 40921488

約数和(自身を除く): 19839520

約数列:

[1, 2, 4, 8, 16, 823, 1601, 1646, 3202, 3292, 6404, 6584, 12808, 13168, 25616, 1317623, 2635246, 5270492, 10540984, 21081968]

約数ペア:

[(1, 21081968), (2, 10540984), (4, 5270492), (8, 2635246), (16, 1317623), (823, 25616), (1601, 13168), (1646, 12808), (3202, 6584), (3292, 6404)]