87100990

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{22391}}^1$

素因数の和:22787

約数の個数: 16

約数和(自身を含む): 157191840

約数和(自身を除く): 70090850

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 22391, 44782, 111955, 223910, 8710099, 17420198, 43550495, 87100990]

約数ペア:

[(1, 87100990), (2, 43550495), (5, 17420198), (10, 8710099), (389, 223910), (778, 111955), (1945, 44782), (3890, 22391)]