20678805

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65647}}^1$

素因数の和:65665

約数の個数: 24

約数和(自身を含む): 40964352

約数和(自身を除く): 20285547

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65647, 196941, 328235, 459529, 590823, 984705, 1378587, 2297645, 2954115, 4135761, 6892935, 20678805]

約数ペア:

[(1, 20678805), (3, 6892935), (5, 4135761), (7, 2954115), (9, 2297645), (15, 1378587), (21, 984705), (35, 590823), (45, 459529), (63, 328235), (105, 196941), (315, 65647)]