161497880

素因数分解:

$2^3\times 5^1\times {\mathrm{4037447}}^1$

素因数の和:4037458

約数の個数: 16

約数和(自身を含む): 363370320

約数和(自身を除く): 201872440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4037447, 8074894, 16149788, 20187235, 32299576, 40374470, 80748940, 161497880]

約数ペア:

[(1, 161497880), (2, 80748940), (4, 40374470), (5, 32299576), (8, 20187235), (10, 16149788), (20, 8074894), (40, 4037447)]