27982480

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3209}}^1$

素因数の和:3331

約数の個数: 40

約数和(自身を含む): 65676600

約数和(自身を除く): 37694120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3209, 4360, 6418, 8720, 12836, 16045, 25672, 32090, 51344, 64180, 128360, 256720, 349781, 699562, 1399124, 1748905, 2798248, 3497810, 5596496, 6995620, 13991240, 27982480]

約数ペア:

[(1, 27982480), (2, 13991240), (4, 6995620), (5, 5596496), (8, 3497810), (10, 2798248), (16, 1748905), (20, 1399124), (40, 699562), (80, 349781), (109, 256720), (218, 128360), (436, 64180), (545, 51344), (872, 32090), (1090, 25672), (1744, 16045), (2180, 12836), (3209, 8720), (4360, 6418)]