21145418

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{677}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 38271744

約数和(自身を除く): 17126326

約数列:

[1, 2, 7, 14, 23, 46, 97, 161, 194, 322, 677, 679, 1354, 1358, 2231, 4462, 4739, 9478, 15571, 15617, 31142, 31234, 65669, 108997, 131338, 217994, 459683, 919366, 1510387, 3020774, 10572709, 21145418]

約数ペア:

[(1, 21145418), (2, 10572709), (7, 3020774), (14, 1510387), (23, 919366), (46, 459683), (97, 217994), (161, 131338), (194, 108997), (322, 65669), (677, 31234), (679, 31142), (1354, 15617), (1358, 15571), (2231, 9478), (4462, 4739)]