21703520

素因数分解:

$2^5\times 5^1\times {\mathrm{135647}}^1$

素因数の和:135662

約数の個数: 24

約数和(自身を含む): 51274944

約数和(自身を除く): 29571424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135647, 271294, 542588, 678235, 1085176, 1356470, 2170352, 2712940, 4340704, 5425880, 10851760, 21703520]

約数ペア:

[(1, 21703520), (2, 10851760), (4, 5425880), (5, 4340704), (8, 2712940), (10, 2170352), (16, 1356470), (20, 1085176), (32, 678235), (40, 542588), (80, 271294), (160, 135647)]