21177321

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{1307}}^1$

素因数の和:1812

約数の個数: 16

約数和(自身を含む): 30889728

約数和(自身を除く): 9712407

約数列:

[1, 3, 11, 33, 491, 1307, 1473, 3921, 5401, 14377, 16203, 43131, 641737, 1925211, 7059107, 21177321]

約数ペア:

[(1, 21177321), (3, 7059107), (11, 1925211), (33, 641737), (491, 43131), (1307, 16203), (1473, 14377), (3921, 5401)]