19740385

素因数分解:

$5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 27763560

約数和(自身を除く): 8023175

約数列:

[1, 5, 7, 35, 49, 197, 245, 409, 985, 1379, 2045, 2863, 6895, 9653, 14315, 20041, 48265, 80573, 100205, 402865, 564011, 2820055, 3948077, 19740385]

約数ペア:

[(1, 19740385), (5, 3948077), (7, 2820055), (35, 564011), (49, 402865), (197, 100205), (245, 80573), (409, 48265), (985, 20041), (1379, 14315), (2045, 9653), (2863, 6895)]