161775620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{74209}}^1$

素因数の和:74327

約数の個数: 24

約数和(自身を含む): 342850200

約数和(自身を除く): 181074580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 74209, 148418, 296836, 371045, 742090, 1484180, 8088781, 16177562, 32355124, 40443905, 80887810, 161775620]

約数ペア:

[(1, 161775620), (2, 80887810), (4, 40443905), (5, 32355124), (10, 16177562), (20, 8088781), (109, 1484180), (218, 742090), (436, 371045), (545, 296836), (1090, 148418), (2180, 74209)]