21000209045

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{3083}}^1\times {\mathrm{15307}}^1$

素因数の和:18484

約数の個数: 16

約数和(自身を含む): 25493330880

約数和(自身を除く): 4493121835

約数列:

[1, 5, 89, 445, 3083, 15307, 15415, 76535, 274387, 1362323, 1371935, 6811615, 47191481, 235957405, 4200041809, 21000209045]

約数ペア:

[(1, 21000209045), (5, 4200041809), (89, 235957405), (445, 47191481), (3083, 6811615), (15307, 1371935), (15415, 1362323), (76535, 274387)]