161255560

素因数分解:

$2^3\times 5^1\times {\mathrm{4031389}}^1$

素因数の和:4031400

約数の個数: 16

約数和(自身を含む): 362825100

約数和(自身を除く): 201569540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4031389, 8062778, 16125556, 20156945, 32251112, 40313890, 80627780, 161255560]

約数ペア:

[(1, 161255560), (2, 80627780), (4, 40313890), (5, 32251112), (8, 20156945), (10, 16125556), (20, 8062778), (40, 4031389)]