81169880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{184477}}^1$

素因数の和:184499

約数の個数: 32

約数和(自身を含む): 199236240

約数和(自身を除く): 118066360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184477, 368954, 737908, 922385, 1475816, 1844770, 2029247, 3689540, 4058494, 7379080, 8116988, 10146235, 16233976, 20292470, 40584940, 81169880]

約数ペア:

[(1, 81169880), (2, 40584940), (4, 20292470), (5, 16233976), (8, 10146235), (10, 8116988), (11, 7379080), (20, 4058494), (22, 3689540), (40, 2029247), (44, 1844770), (55, 1475816), (88, 922385), (110, 737908), (220, 368954), (440, 184477)]