81433880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185077}}^1$

素因数の和:185099

約数の個数: 32

約数和(自身を含む): 199884240

約数和(自身を除く): 118450360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185077, 370154, 740308, 925385, 1480616, 1850770, 2035847, 3701540, 4071694, 7403080, 8143388, 10179235, 16286776, 20358470, 40716940, 81433880]

約数ペア:

[(1, 81433880), (2, 40716940), (4, 20358470), (5, 16286776), (8, 10179235), (10, 8143388), (11, 7403080), (20, 4071694), (22, 3701540), (40, 2035847), (44, 1850770), (55, 1480616), (88, 925385), (110, 740308), (220, 370154), (440, 185077)]