18990681

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{883}}^1$

素因数の和:1060

約数の個数: 16

約数和(自身を含む): 25968384

約数和(自身を除く): 6977703

約数列:

[1, 3, 67, 107, 201, 321, 883, 2649, 7169, 21507, 59161, 94481, 177483, 283443, 6330227, 18990681]

約数ペア:

[(1, 18990681), (3, 6330227), (67, 283443), (107, 177483), (201, 94481), (321, 59161), (883, 21507), (2649, 7169)]