21702080

素因数分解:

$2^6\times 5^1\times {\mathrm{67819}}^1$

素因数の和:67836

約数の個数: 28

約数和(自身を含む): 51678840

約数和(自身を除く): 29976760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67819, 135638, 271276, 339095, 542552, 678190, 1085104, 1356380, 2170208, 2712760, 4340416, 5425520, 10851040, 21702080]

約数ペア:

[(1, 21702080), (2, 10851040), (4, 5425520), (5, 4340416), (8, 2712760), (10, 2170208), (16, 1356380), (20, 1085104), (32, 678190), (40, 542552), (64, 339095), (80, 271276), (160, 135638), (320, 67819)]