128071760

素因数分解:

$2^4\times 5^1\times {\mathrm{1600897}}^1$

素因数の和:1600910

約数の個数: 20

約数和(自身を含む): 297767028

約数和(自身を除く): 169695268

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1600897, 3201794, 6403588, 8004485, 12807176, 16008970, 25614352, 32017940, 64035880, 128071760]

約数ペア:

[(1, 128071760), (2, 64035880), (4, 32017940), (5, 25614352), (8, 16008970), (10, 12807176), (16, 8004485), (20, 6403588), (40, 3201794), (80, 1600897)]