68481680

素因数分解:

$2^4\times 5^1\times {\mathrm{856021}}^1$

素因数の和:856034

約数の個数: 20

約数和(自身を含む): 159220092

約数和(自身を除く): 90738412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 856021, 1712042, 3424084, 4280105, 6848168, 8560210, 13696336, 17120420, 34240840, 68481680]

約数ペア:

[(1, 68481680), (2, 34240840), (4, 17120420), (5, 13696336), (8, 8560210), (10, 6848168), (16, 4280105), (20, 3424084), (40, 1712042), (80, 856021)]