85870990

素因数分解:

$2^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{17489}}^1$

素因数の和:17987

約数の個数: 16

約数和(自身を含む): 154891440

約数和(自身を除く): 69020450

約数列:

[1, 2, 5, 10, 491, 982, 2455, 4910, 17489, 34978, 87445, 174890, 8587099, 17174198, 42935495, 85870990]

約数ペア:

[(1, 85870990), (2, 42935495), (5, 17174198), (10, 8587099), (491, 174890), (982, 87445), (2455, 34978), (4910, 17489)]