21043385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7219}}^1$

素因数の和:7288

約数の個数: 16

約数和(自身を含む): 28071360

約数和(自身を除く): 7027975

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7219, 36095, 79409, 382607, 397045, 1913035, 4208677, 21043385]

約数ペア:

[(1, 21043385), (5, 4208677), (11, 1913035), (53, 397045), (55, 382607), (265, 79409), (583, 36095), (2915, 7219)]