21897129

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{1361}}^1$

素因数の和:1568

約数の個数: 16

約数和(自身を含む): 30334464

約数和(自身を除く): 8437335

約数列:

[1, 3, 31, 93, 173, 519, 1361, 4083, 5363, 16089, 42191, 126573, 235453, 706359, 7299043, 21897129]

約数ペア:

[(1, 21897129), (3, 7299043), (31, 706359), (93, 235453), (173, 126573), (519, 42191), (1361, 16089), (4083, 5363)]