21480555

素因数分解:

$3^1\times 5^1\times {\mathrm{383}}^1\times {\mathrm{3739}}^1$

素因数の和:4130

約数の個数: 16

約数和(自身を含む): 34467840

約数和(自身を除く): 12987285

約数列:

[1, 3, 5, 15, 383, 1149, 1915, 3739, 5745, 11217, 18695, 56085, 1432037, 4296111, 7160185, 21480555]

約数ペア:

[(1, 21480555), (3, 7160185), (5, 4296111), (15, 1432037), (383, 56085), (1149, 18695), (1915, 11217), (3739, 5745)]