20837985

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28351}}^1$

素因数の和:28373

約数の個数: 24

約数和(自身を含む): 38785536

約数和(自身を除く): 17947551

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28351, 85053, 141755, 198457, 425265, 595371, 992285, 1389199, 2976855, 4167597, 6945995, 20837985]

約数ペア:

[(1, 20837985), (3, 6945995), (5, 4167597), (7, 2976855), (15, 1389199), (21, 992285), (35, 595371), (49, 425265), (105, 198457), (147, 141755), (245, 85053), (735, 28351)]