2021201680

素因数分解:

$2^4\times 5^1\times {\mathrm{25265021}}^1$

素因数の和:25265034

約数の個数: 20

約数和(自身を含む): 4699294092

約数和(自身を除く): 2678092412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25265021, 50530042, 101060084, 126325105, 202120168, 252650210, 404240336, 505300420, 1010600840, 2021201680]

約数ペア:

[(1, 2021201680), (2, 1010600840), (4, 505300420), (5, 404240336), (8, 252650210), (10, 202120168), (16, 126325105), (20, 101060084), (40, 50530042), (80, 25265021)]