217420520

素因数分解:

$2^3\times 5^1\times {\mathrm{5435513}}^1$

素因数の和:5435524

約数の個数: 16

約数和(自身を含む): 489196260

約数和(自身を除く): 271775740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5435513, 10871026, 21742052, 27177565, 43484104, 54355130, 108710260, 217420520]

約数ペア:

[(1, 217420520), (2, 108710260), (4, 54355130), (5, 43484104), (8, 27177565), (10, 21742052), (20, 10871026), (40, 5435513)]