81543880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185327}}^1$

素因数の和:185349

約数の個数: 32

約数和(自身を含む): 200154240

約数和(自身を除く): 118610360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185327, 370654, 741308, 926635, 1482616, 1853270, 2038597, 3706540, 4077194, 7413080, 8154388, 10192985, 16308776, 20385970, 40771940, 81543880]

約数ペア:

[(1, 81543880), (2, 40771940), (4, 20385970), (5, 16308776), (8, 10192985), (10, 8154388), (11, 7413080), (20, 4077194), (22, 3706540), (40, 2038597), (44, 1853270), (55, 1482616), (88, 926635), (110, 741308), (220, 370654), (440, 185327)]