20439615

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27809}}^1$

素因数の和:27831

約数の個数: 24

約数和(自身を含む): 38044080

約数和(自身を除く): 17604465

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27809, 83427, 139045, 194663, 417135, 583989, 973315, 1362641, 2919945, 4087923, 6813205, 20439615]

約数ペア:

[(1, 20439615), (3, 6813205), (5, 4087923), (7, 2919945), (15, 1362641), (21, 973315), (35, 583989), (49, 417135), (105, 194663), (147, 139045), (245, 83427), (735, 27809)]