21538137

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1\times {\mathrm{293}}^1$

素因数の和:632

約数の個数: 16

約数和(自身を含む): 29211840

約数和(自身を除く): 7673703

約数列:

[1, 3, 107, 229, 293, 321, 687, 879, 24503, 31351, 67097, 73509, 94053, 201291, 7179379, 21538137]

約数ペア:

[(1, 21538137), (3, 7179379), (107, 201291), (229, 94053), (293, 73509), (321, 67097), (687, 31351), (879, 24503)]